- Open Access
Systematic analysis of randomised controlled trials of Chinese herb medicine for non-alcoholic steatohepatitis (NASH): implications for future drug development and trial design
Chinese Medicine volume 18, Article number: 58 (2023)
Non-alcoholic steatohepatitis (NASH) is a liver disease currently lacking an approved therapy, resulting in significant clinical demand. Traditional Chinese medicines (TCMs) have been commonly used to manage NASH. This study aimed to systematically analyse the randomised controlled trials (RCTs) using TCMs for NASH management.
A systematic literature review was performed by following PRISMA guidelines 2020 in six electronic databases: PubMed, Web of Science, Scopus, Embase, the Cochrane Library, and China National Knowledge Infrastructure, from inception until August 2022. RCTs using TCMs for NASH were included in the analysis, irrespective of language or blinding.
112 RCTs were included in this review, with 10,573 NASH participants. 108 RCTs were conducted in China, and 4 RCTs were in other countries. Herbal medicine decoction was the major dosage form used for treating NASH (82/112). 11 TCMs products have been approved for NASH treatment (8 in China, 2 in Iran, and 1 in Japan). Classic prescriptions, such as “Huang Lian Jie Du decoction”, “Yin Chen Hao decoction”, and “Yi Guan Jian” were used in some studies. The TCMs treatment of NASH involved the use of 199 different plants, with the top 5 herbs being Salviae Miltiorrhizae Radix Et Rhizoma, Alismatis Rhizoma, Bupleuri Radix, Poria, and Curcumae Radix. “Salviae Miltiorrhizae Radix Et Rhizoma + Bupleuri Radix/Alismatis Rhizoma” were the mostly common drug-pair in the herbs network analysis. Nowadays, “Bupleuri Radix/Alismatis Rhizoma + Atractylodis Macrocephalae Rhizoma” are increasingly applied in herbal formulas for NASH. Based on the PICOS principles, the included studies varied in terms of the population, intervention, comparator, outcomes, and study design. However, some studies reported unstandardised results and failed to report diagnostic standards, inclusion or exclusion criteria, or sufficient patient information.
Adopting Chinese classic prescriptions or drug-pair may provide a basis for developing new drugs of NASH management. Further research is needed to refine the clinical trial design and obtain more convincing evidence for using TCMs to treat NASH.
Non-alcoholic steatohepatitis (NASH), as an inflammatory subtype of non-alcoholic fatty liver disease, is associated with the progression of the severe liver illness, such as liver fibrosis, hepatocellular carcinoma, the occurrence of cirrhosis, liver transplant, and death [1,2,3]. Between 2016 and 2030, the prevalence of NASH is projected to increase by up to 56% in China, France, Germany, Italy, Japan, Spain, the United Kingdom, and the United States . The corresponding prevalence of NASH-related comorbidities was: 82% with obesity; 82% with hyperlipidemia; 76% with metabolic syndrome; 70% with hypertension; 48% with type 2 diabetes mellitus. Additionally, NASH raises the risk of cardiovascular disease, cancer, and chronic renal disease [6, 7]. Therefore, NASH’s high prevalence and severe complications pose a significant societal burden. According to an assessment of the financial impact of NASH in five European nations and the United States, the average direct medical, direct non-medical, and indirect expenses per patient per year were €2763, €4917, and €5509, respectively . In Hong Kong, the average yearly cost of NASH per person was $257 .
There is a significant clinical need for a medicine to treat NASH, yet none has been licensed . The two primary therapies for NASH are pharmacological treatments and weight loss or weight control techniques. Drugs that regulate glucolipid metabolism, prevent oxidative stress or inflammatory reactions, have anti-fibrotic properties, and regulate gut flora are also used to manage NASH [11, 12]. These approaches aim to address the underlying pathophysiological mechanisms that contribute to the development and progression of NASH. Despite some promising results in clinical trials, further research is still needed to identify safe and effective treatments for this condition.
Traditional Chinese medicines (TCMs) is increasingly employed in managing or treating liver problems and is based on tailored treatment procedures . The use of TCMs for treating NASH has been shown to be effective in leading to a variety of pathological changes, including improved hepatic lipid metabolism, decreased liver inflammation, reduced fibrosis, and ameliorated intestinal flora. The potential of TCMs for NASH has been validated by current pharmacological methods in some classic traditional Chinese prescriptions . A growing number of clinical trials or research studies using TCMs to treat NASH have been conducted in recent years. However, the TCMs used in various studies were unique. Notably, a systematic analysis of traditional Chinese medicine prescriptions is lacking. Furthermore, there are still flaws in the clinical trial design, even though evaluating the quality of randomised controlled trials (RCTs) of TCMs generally found a minimal risk of bias [12, 14].
Therefore, this study aimed to systematically analyse the RCTs using TCMs for NASH management. These findings will aid in advancing TCMs medication research for NASH and generating suggestions for future TCMs RCTs for NASH.
Literature search and screen
This systematic analysis was performed following PRISMA guidelines 2020 . The literature research was conducted in six electronic databases: PubMed, Web of Science, Scopus, Embase, the Cochrane Library, and China National Knowledge Infrastructure, from inception up to August 2022.
The related Mesh terms or synonyms were also searched (as shown in Table 1). Two researchers separately finished the screening. We conducted two rounds of literature screening to identify RCT using TCMs to treat NASH patients. In the first round, according to study titles and abstracts, we initially excluded the following studies: (1) the language is neither English nor Chinese; (2) Animal studies, quasi-randomised control trials, non-randomised trial, pharmacodynamics investigations, and in vitro studies; (3) Reviews, commentaries, letters, conference abstracts, notes, editorial material, guidelines. The second round involved a full text review in screening for any RCTs using TCMs on NASH. References of included publications were also checked.
Data collection and management
The TCMs medication and clinical research design were included in a preset data extract form (Table 2). About the medication, different drug types and specific materials in each formula maybe collected. Chinese herbal formulas in this research represented using different herbals for treating NASH, which included various dosage forms, such as decoction, granules, capsules, tablets and pills. And as for the clinical research design, the data extract content was developed in accordance with PICOS principles .
The TCMs syndrome score is a rating system used to assess patient symptoms such dry mouth, bitter eyes, dry eyes, bleeding gums, sleeplessness and nightmares, abdominal distension, loss of appetite, weariness, lack of appetite, hypochondriac pain, waist and knee pain, urine and stool, etc. A score of 0 points, 1 point, 2 points, or 3 points would indicate that the symptoms were "no," "mild," "moderate," or "severe," respectively . Therapeutic effect index = (pre-treatment TCMs symptom score − post-treatment score)/pre-treatment TCMs symptom score × 100% .
Data extraction based on the requirements of Table 1 was carried out independently by two researchers. Any disagreements between the two researchers were resolved through discussion and with the help of a third researcher. Descriptions of data were completed by Microsoft® Excel® 2019MSO. The Gephi (https://gephi.org/) software was used to visualise the network layout of different herbs in different formulas . In the network diagram, each node represents a herb, and each edge represents the relationship between two herbs. This approach allowed for a visual representation of the relationships between different herbs and their usage in various formulas, which can provide insights into potential synergistic effects and aid in developing new herbal formulations.
Of the 1523 references identified through the search strategy, 499 duplicate articles were excluded. After two rounds of screening, 112 studies were finally included in this review (Fig. 1). 106 of the 112 publications covered in this review were published in Chinese, while 6 were published in English.
All the studies were published between 2004 and 2022. The overall trend of article publication is on the rise and was more concentrated between 2011 and 2017 (Fig. 2).
Medication of TCMs for NASH
According to the unique composition, there are four RCTs on single herb extract [19,20,21,22] and 108 RCTs on Chinese medicine formulas have been included [23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130] (as shown in Table 3). Various TCMs dosage forms were used in the management of NASH across the included RCTs. Among the 82 RCTs, herbal medicine decoctions were applied. Out of these, 31 RCTs used herbal medicine decoction in combination with western medicine, while 50 RCTs used only herbal medicine decoction in the test group. One study used herbal medicine decoction combined with Chinese patent medicine . None of the herbal medicine decoction used in the studies has been approved.
Thirteen RCTs used herbal medicine granules, out of which 11 trials used herbal medicine granules in combination with western medicine [25, 30, 43, 47, 48, 53, 71, 78, 107, 111, 114] and 2 trials used only herbal medicine granules in test group [44, 59]. It worth noting that Shen Ge granules  have been approved as a TCMs hospital prescription in Shanghai, and the approved number is Z20220016000.
Nine RCTs used herbal medicine capsules for NASH in test group, out of which four trials used herbal medicine capsules combined with western medicines [33, 40, 89, 121]. All of these capsules have been approved in China, including Jiang Zhi Tong Mai capsules (National license number: Z20026429) , Shen Ze Shu Gan capsules (National license number: Z20130022) , Fu Zheng Hua Yu capsules (National license number: Z20020074) , and Zhi Bi Tai capsules (National license number: Z51022196) . 5 trials used only TCMs capsules in test group [55, 87, 88, 108, 125], among which Da Huang Li Dan capsules (National license number: Z20025609) , Zhi Gan capsules (Henan license number: Z05010566)  have been approved in China.
Two RCTs used herbal medicine tablets in the test group, one of which was TCMs combined with western medicine . The other trial used only TCM tablet , which have been approved in Japan and have a history of more than 28 years (trade name: kyotsujigyo, https://kyotsujigyo.net/). Additionally, one trial used herbal medicine mixture in test group , and one trial used herbal medicine pills (listed in Beijing as a TCMs prescription in medical institution with approval number Z20190022000) .
Noteworthy, there were 3 RCTs that used the hospital preparations of TCMs, which included Shen Ge granules , Zhi Gan capsules , and Jian Pi Shu Gan pill . Hospital preparations, also known as medical institution preparations, refer to preparations that medical institutions make according to the clinical needs of the unit. They are approved by the provincial, autonomous regions, or municipalities directly under the Central Drug Supervision and Administration Department for hospital consultation and fixed prescription preparations for patients. These preparations belong to the hospital's own pharmaceuticals.
From the results of drug generic name statistics, the medication of control group of included RCTs for NASH is dominated by chemical drugs (as shown in Table 4), and the drugs most often used as controls are Polyene Phosphatidylcholine Capsules, Silybin Meglumine Tablets or granules, and Tiopronin Tablets. Secondly, biological drugs and proprietary Chinese medicines are also used as control drugs.
Herbal formulas information
To determine the composition of herbs in prescriptions, we analysed the prescription information from the 108 included RCTs that used herbal formulas for NASH. Of these, 69 trials utilised herbal formulas alone, while 39 trials chose herbal formulas in conjunction with other medications. Additionally, one study found that the herbal formulas it looked at were not superior to western medicines , while another study discovered that the effects of the herbal formulas it looked at were similar to those of western medicines .
There were 21 RCTs based on the Chinese traditional prescriptions to treat NASH. The information about composition, functions and resources of Chinese traditional prescriptions that are applied in the included RCTs is shown in Table 4. The remaining research used various prescriptions by adding other herbs based on traditional Chinese medicine fomulas. Based on the "Catalogue of Traditional Chinese Medicine Classical Prescription (First Batch)"of National Administration of Traditional Chinese Medicine in China, we analysed all prescription compositions. Two RCTs included the composition of "Ling Gui Zhu Gan Decoction" , and one study also included the composition of "Yi Guan Decoction" .
The formulas of some RCTs did not mention the referenced prescriptions, but their herbal composition reflected the composition of some traditional Chinese medicine classical prescriptions. For instance, 21 trials contained Alismatis Rhizoma and Atractylodis Macrocephalae Rhizoma, which are the composition of the classical prescriptions “Ze Xie Decoction”. Additionally, 5 trials contained Astragali Radix and Angelicae Sinensis Radix Angelicae, which are the composition of the classical prescriptions “Dang Gui Bu Xue Decoction”.
Totally 199 Chinese herbs were employed in 108 RCTs, with Salviae Miltiorrhizae Radix Et Rhizoma being the most frequently used herb, followed by Alismatis Rhizoma, Bupleuri Radix, Poria, Curcumae Radix, Artemisiae Scopariae Herba, Atractylodis Macrocephalae Rhizoma, Crataegi Fructus, Cassiae Semen, and Citri Reticulatae Pericarpium, in descending order (n% = n/108 × 100%) (Fig. 3).
Herbs network analysis
Network analysis was applied to explore the relationship between Chinese herbs used in treating NASH in different years. In Fig. 4, Salviae Miltiorrhizae Radix Et Rhizoma (SMRER), Alismatis Rhizoma (AR), Bupleuri Radix (BR), Curcumae Radix (CR), Crataegi Fructus (CF), and Poria remained in the top 10, with a gradual increase in the use of Atractylodis Macrocephalae Rhizoma (AMR) and Artemisiae Scopariae Herba (ASH). The Chinese herbs used to treat NASH have changed over different periods, with an increase in the number of herbs used and the complexity of their relationships. However, "SMRER and AR" and "SMRER and BR" remained closely interconnected throughout the different time periods.
The network diagram in this study represents the presence of pairs of herbs in prescriptions for the treatment of NASH, with nodes representing individual Chinese medicinal materials and edges indicating co-occurrence in the same prescription. The size of the nodes indicates the frequency of the Chinese herbs, while the width of the edges represents the frequency of co-occurrence.
Figure 4a displayed 67 nodes representing 67 Chinese herbs mentioned in prescriptions for NASH, with a total of 604 edges indicating 763 pairs of herbs appearing together. Before 2010, SMRER appeared 13 times (7.78%) and was closely related to AR, PCRER, and BR.
Figure 4b showed 128 nodes and 1382 edges, indicating 128 herbs appearing in pairs 1382 times. Between 2011 and 2015, SMRER appeared 26 times (6.65%), while PCRER and BR did not appear in the top 10. The most commonly used pairs during this period were "SMRER and BR" (n = 7), "SMRER and CF" (n = 7), and "SMRER and AR" (n = 6).
Figure 4c contained 138 nodes and 1577 edges, indicating 1577 pairs of Chinese herbs. After 2015, AMR, SMRER, and ASH all appeared 20 times (4.41%), and PRA reached the top 10 for the first time with a frequency of 12 (2.64%). The high-frequency pairs during this period were "PRA and SMRER" (n = 4), "SMRER and Poria" (n = 5), "AMR and CR", and "AMR and BR". These pairs differed from those in previous periods.
Single herbal extract
Four RCTs investigated the effects of herbal extracts on NASH. The herbal extract studied were: Cumin , Phyllanthus urinaria , Cynara scolymus , and Silymarin . Cumin was in capsule form and listed in Iran at https://en.goldaruco.com/product/livergol-tablet/. Phyllanthus urinaria, Cynara scolymus, and Silymarin (listed in Iran, https://barijessence.com/en/) were all in tablets form. The trial of Phyllanthus urinaria was conducted in Hong Kong, and the other three were conducted in Iran.
Two studies found that a single herbal extract was not significantly more beneficial than a placebo [19, 20]. Two trails reported that single herb extract improved the symptom of NASH [21, 22], while two trails reported no significant differences between herbal extract group and control group [19, 20].
Clinical research design
Overview of the clinical research design
As shown in Table 5, 10,573 participants were included in this study. Among them, 10,341 participants in 108 RCTs were enrolled in China, 224 participants in three RCTs were enrolled in Iran [19,20,21,22], and eight participants in one RCT were enrolled in Japan . The age range of participants was 16–76 years.
Sixty-two RCTs reported the history of NASH, the shortest history was 3 months and the longest was 16 years. Among the 72 RCTs that reported the type of visit, 47 trials enrolled outpatients, 21 trials enrolled both outpatients and inpatients, and 4 trials enrolled only inpatients. Regarding the patient source, 8782 participants in 81 RCTs were from a single hospital, and 1791 participants in 13 trials were from multiple hospitals. The mean sample size was 94 subjects, with sample sizes varying from 8 to 220 subjects.
Inclusion and exclusion criteria
The inclusion criteria and exclusion criteria of the 112 RCTs were shown in Additional file 1. To identify NASH patients, 103 RCTs used relevant standards or literature and established integrative medicine and western medicine diagnostic criteria. These researches considered age, medication history, biochemical indexes, alcohol intake, adherence, comorbidities, and disease history as inclusion criteria, in addition to diagnostic criteria.
Of the 112 RCTs, 91 reported exclusion criteria, while 21 did not specify their exclusion criteria (see Additional file 2). Comorbidities, established causes of fatty liver or liver disease, pregnancy, or breastfeeding were the primary exclusion factors. Furthermore, 29 RCTs considered the risk of complex herbal components causing allergies and excluded individuals who could have had such reactions or had a high sensitivity to the test drugs.
Comparator group setting
The medication of the control group could be divided into 6 types (as shown in Table 6). Chemical medicines were the most commonly used comparator, followed by TCMs and biological products. In addition, three RCTs employed behavioral interventions, such as like changes in eating or exercise habits, as the control group.
All the studies set up different efficacy detection systems, such as overall clinical efficacy rate, serum indicators, radiological response, etc. (Table 7). Based on the traditional Chinese medicine theory, the effectiveness of the TCMs prescriptions was mainly reflected in soothing liver qi stagnation (24 RCTs), reducing cellulite (15 RCTs), tonifying spleen (8 RCTs). After treatment, the test group can generally have a good improvement compared with that before treatment, but not all indicators showed intergroup differences. Accordingly, this study synthesised the changes in relevant indicators from the perspective of clinical outcomes (Table 8).
Adverse effects were reported in 51 RCTs and not mentioned in others. Twenty-eight RCTs reported no adverse effect was observed in either the test or control groups. The main adverse effects observed in the 23 remaining trials were related to the digestive system, including stomachache, diarrhea, nausea, and constipation. None of the reported adverse reactions were related to the test drug. Out of a total of 82 participants who experienced side effects, two of them experienced severe side effects, which were stroke and back pain. In the control group, one participant out of 55 subjects experienced a serious adverse reaction, acute appendicitis.
Efficacy assessment and case report of cure
There were 57 RCTs that reported the number of cure cases, and it was observed that different efficacy assessment criteria were used to determine a cure. Specifically, 13 RCTs based their cure criteria on changes in TCMs syndrome, while 43 RCTs relied on overall clinical efficacy.
The efficacy assessment criteria of TCMs syndrome were referred from guidelines and Chinese expert consensus, including Consensus Opinions on the Diagnosis and Treatment of NALFD with TCMs and Western Medicine (2011 edition , 2017 edition ), Chinese Medicine Clinical Research of New Drugs Guiding Principles (2002 edition ), Guidelines for Management of NAFLD (2010 edition), Diagnostic Efficacy Criteria for TCMs Diseases (1994 edition ). The primary criteria for determining cure were a therapeutic effect index greater than 90% or 95% (as shown in the Additional file 3).
The criteria for overall clinical efficacy were primarily based on "Consensus opinion on the combined Chinese and Western medicine treatment of non-alcoholic fatty liver disease," "Relevant standards for the Chinese medicine treatment of non-alcoholic fatty liver disease," "guidelines for clinical research on new Chinese medicine 2002," "guidelines for the prevention and treatment of non-alcoholic fatty liver disease," and "guidelines for the treatment of Chinese medicine digestive diseases". Of the 57 RCTs, 11 trials did not specify the basis for their cure criteria setting, and three trials referred to the efficacy criteria in the literature (see Additional file 4).
TCMs has been widely used to manage liver diseases for thousands of years, especially in China . While TCMs does not explicitly describe NASH, its symptoms can be classified according to traditional TCMs categories, such as "hypochondriac pain", "accumulation", and "phlegmatic mass", which are often linked to factors such as improper diet, physical exhaustion, and poor mental health [11, 136]. Accrodingnally, the treatment principle for NASH is improving variety symptoms, such as blood stimulation and phlegm emission, spleen tonification and qi management, liver cleaning, and bile secretion stimulation , by the major mechanisms of changing cholesterol levels, enhancing liver function, reducing liver fibrosis, and influencing gut flora .
This research found evidence supporting the efficacy of herbal compounds or single herbal extracts in treating NASH based on included RCTs. At present, no approved therapy method for NASH exists, and the development of TCMs drug therapies and research may contribute to the discovery of novel therapeutic modalities .
About the TCMs medication
This study discovered that there are many applications of herbal formulas for treating NASH, including Chinese traditional prescriptions, classic Chinese traditional prescriptions, or self-prepared TCMs prescriptions. Currently, some studies indicated that herbal formulas can regulate intestinal flora, which in turn reduces liver inflammation and oxidative stress, achieves regulation of individual immunity, ultimately lower serum ammonia levels, improves lipid metabolism, protects the intestinal barrier, and reverses liver fibrosis with TLR4 signaling pathway may be closely related .
Twenty-one RCTs included in this study were conducted clinical studies on 18 Chinese traditional prescriptions. The possible mechanism of action of Yin Chen Hao Decoction may be to control liver fat by enhancing lipocalin and endothelial progenitor cells, which in turn regulate peroxisome proliferator-activated receptor γ (PPAR γ) for the treatment of liver fat disease . PPAR γ can encourage the absorption and storage of FFA in adipose tissue and are thought to be a key target for the treatment of fat liver [140, 141]. In addition to regulating PPAR γ, Ge Gen Qin Lian Decoction may also be used to treat liver fat diseases via reducing LDL and HDL . Ling Gui Zhu Gan Decoction  and Huang Lian Jie Du Decoction  both can lower TC, TG, and LDL-C levels in order to reduce liver fat.
Noteworthy, the RCTs included in this study referred to some classic Chinese traditional prescriptions such as “Yi Guan Decoction”(YGD) , “Ling Gui Zhu Gan Decoction”(LGZGD) , “Huang Lian Jie Du Decoction” (HLJDD) [26, 49] and “Yin Chen Hao Decoction” (YCHD) [47, 56, 65, 73]. Chinese medicine's multi-component and multi-mechanism characteristics form the basis on which it can be applied to treat various diseases [145, 146]. YGD is well known for its hepatoprotective properties [147, 148]. Especially its antifibrotic effects through preventing hepatic stellate cell activation and hepatocyte death , antiangiogenic effects via the HIF-1/VEGF signaling pathway , and anti-inflammation . HLJDD has several functions in treating liver diseases, including liver protection [152, 153], anti-inflammatory, blood sugar[155, 156] and lipidmanagement [157, 158]. LGZGD and YCHD have also shown their effectiveness in treating non-alcoholic fatty liver disease or liver fibrosis [159, 160].
The "Catalogue of Classical TCMs Prescription (the First batch)" (CCTCMP), published in 2018 by the National Administration of Traditional Chinese Medicine, advocats for and promots the drug development of Chinese herbal formulas . Some trials in this study used formulas from CCTCMP, including "Ling Gui Zhu Gan Decoction ," "Yi Guan Decoction ," and "Dang Gui Bu Xue Decoction [54, 59, 64, 101, 124]". Chinese regulatory authorities have continuously promoted the CCTCMP, and new drug development in NASH based on CCTCMP may be carried out to accelerate the launch of new medications within the framework of the national strategy of active promotion.
Herbs have pharmacological effects that are significantly stronger when administered together (in herb-pairs) than when taken alone . Network analysis showed that "Salviae Miltiorrhizae Radix Et Rhizoma and Alismatis Rhizoma" and "Salviae Miltiorrhizae Radix Et Rhizoma and Bupleuri Radix" were closely connected drug-pair. Preclinical research validated the efficacy for treating liver disease of Salviae Miltiorrhizae Radix Et Rhizoma , Alismatis Rhizoma  and Bupleuri Radix . Exploring the treatment of NASH with TCMs by selecting optimal drug-pair for pharmacological action studies or clinical selection of drug pairs to treat patients with numerous comorbidities can be valuable, particularly by researching medication pairings with a high frequency of occurrence.
About the clinical trial design
The included studies were primarily single-centre clinical trials with limited sample numbers, short durations, and varying inclusion and exclusion criteria. A significant issue was a lack of standardised clinical design and inadequate information reporting. Firstly, the diagnostic criteria were rather inconsistent. Some of the studies did not completely adhere to the recommendations' criteria or did not properly cite the diagnostic criteria. Only four studies cited the recommendations from NAFLD guidelines. Secondly, no study had a clear description of the staging of the included patients, which is also a non-standard aspect of the existing clinical trials. Most clinical outcome observation indicators were liver enzymes, blood lipids, or B-ultrasound results, with only two trials reporting liver biopsy results [20, 122]. Furthermore, most investigations lasted less than 6 months, with only two studies having a 3-month follow-up [86, 111]. It is important to note that liver biopsy is the gold standard for diagnosing NASH, and the majority of studies did not specify the basis for diagnosis. According to Filozof’s  and Sanyal’s researches, the diagnosis of NASH could be made based on the biopsy findings, and the severity of the disease should be established at the time of inclusion. Excluding early validation trials, the clinical trial period should go longer than 6 months and a 6-month follow-up period .
Although 108 RCTs indicated significant efficacy differences between the test and control groups, the clinical design limitations may constrain the representativeness of the relevant results. The definition of cured cases was unclear, and changes in clinical indications before and after treatment cannot be used to determine a cure. Additional clinical research with larger samples, multicentre studies, extended durations, and standardised treatments is necessary to establish the efficacy of TCMs in treating NASH .
There were several limitations in our study. The medication analysis did not explore each Chinese herbal formula's mechanisms or active compounds. The results of overall Chinese herbal formulas did not differentiate between "only TCMs" and "TCMs combined with Western medicine" interventions. Moreover, all RCTs were included without quality evaluation, making it difficult to determine the efficacy and safety of TCMs for NASH. Future clinical trials of TCMs for NASH should be conducted with greater rigor, and mechanistic fundamental research needs further investigation.
The rising incidence, related health burden, and absence of authorised medication for patients with NASH create a significant unmet medical need. NASH can be treated with Chinese medicine on a solid and long-term clinical basis. The new drug development of TCMs based on traditional Chinese classical prescriptions may facilitate the quick development of novel treatment modalities and the quick commercialisation of pharmaceuticals, considering the national support policies. Additionally, the pharmacological analysis of herbal remedies for NASH may benefit from investigating highly frequent drug pairs. TCMs for NASH has been the subject of previous RCTs yet these studies were still flawed or inconsistent. To get more convincing evidence for using TCMs to treat NASH, follow-up research should improve the clinical trial design.
Availability of data and materials
All data are fully available without restriction.
Controlled attenuation parameters
Free fatty acids
Fasting plasma insulin
Fasting plasma glucose
High density lipoprotein-cholesterol
Low density lipoprotein-cholesterol
- L/S ratio:
Liver to spleen ratio
Peroxisome proliferators-activated receptors
Tumor necrosis factor-α
Sheka AC, Adeyi O, Thompson J, Hameed B, Crawford PA, Ikramuddin S. Non-alcoholic steatohepatitis: a review. JAMA. 2020;323(12):1175–83.
Takahashi Y, Fukusato T. Histopathology of non-alcoholic fatty liver disease/non-alcoholic steatohepatitis. World J Gastroenterol. 2014;20(42):15539–48.
Perumpail B, Khan M, Yoo E, Cholankeril G, Kim D, Ahmed A. Clinical epidemiology and disease burden of non-alcoholic fatty liver disease. World J Gastroenterol. 2017;23(47):8263–76.
Estes C, Anstee QM, Arias-Loste MT, et al. Modeling nafld disease burden in China, France, Germany, Italy, Japan, Spain, United Kingdom, and United States for the period 2016–2030. J Hepatol. 2018;69(4):896–904.
Lonardo A, Byrne CD, Caldwell SH, Cortez-Pinto H, Targher G. Global epidemiology of non-alcoholic fatty liver disease. Meta-analytic assessment of prevalence, incidence and outcomes. Hepatology. 2016;64(4):1388–9.
European Association for the Study of the Liver (EASL); European Association for the Study of Diabetes (EASD); European Association for the Study of Obesity (EASO). EASL-EASD-EASO Clinical Practice Guidelines for the management of non-alcoholic fatty liver disease. J Hepatol. 2016;64(6):1388–402.
Chalasani N, Younossi Z, Lavine JE, Charlton M, Cusi K, Rinella M, et al. The diagnosis and management of non-alcoholic fatty liver disease: practice guidance from the American Association for the Study of Liver Diseases. Hepatology. 2018;67(1):328–57.
O’Hara J, Finnegan A, Dhillon H, Ruiz-Casas L, Pedra G, Franks B, Morgan G, Hebditch V, Jönsson B, Mabhala M, Reic T. Cost of non-alcoholic steatohepatitis in Europe and the USA: the GAIN study. JHEP Reports. 2020;2(5):100142.
Tampi RP, Wong VW-S, Wong GL-H, Shu SS-T, Chan HL-Y, Fung J, et al. Modelling the economic and clinical burden of non-alcoholic steatohepatitis in East Asia: data from Hong Kong. Hepatol Res. 2020;50(9):1024–31.
Singh S, Allen AM, Wang Z, et al. Fibrosis progression in non-alcoholic fatty liver vs non-alcoholic steatohepatitis: a systematic review and meta-analysis of paired-biopsy studies. Clin Gastroenterol Hepatol. 2015;13(4):643-654.e9.
Vuppalanchi R, Noureddin M, Alkhouri N, Sanyal AJ. Therapeutic pipeline in non-alcoholic steatohepatitis. Nat Rev Gastroenterol Hepatol. 2021;18(6):373–92.
Chen M, Xie Y, Gong S, Wang Y, Yu H, Zhou T, Huang F, Guo X, Zhang H, Huang R, Han Z. Traditional Chinese medicine in the treatment of non-alcoholic steatohepatitis. Pharmacol Res. 2021;172:105849.
Zhao CQ, Zhou Y, Ping J, Xu LM. Traditional Chinese medicine for treatment of liver diseases: progress, challenges and opportunities. J Integr Med. 2014;12(5):401–8.
Liang Z, Chen X, Shi J, Hu H, Xue Y, Ung CO. Efficacy and safety of traditional Chinese medicines for non-alcoholic fatty liver disease: a systematic literature review of randomised controlled trials. Chin Med. 2021;16(1):1–38.
Page MJ, McKenzie JE, Bossuyt PM, et al. The PRISMA 2020 statement: an updated guideline for reporting systematic reviews. Syst Rev. 2021;10(1):1–11.
Methley AM, Campbell S, Chew-Graham C, et al. PICO, PICOS and SPIDER: a comparison study of specificity and sensitivity in three search tools for qualitative systematic reviews. BMC Health Serv Res. 2014;14(1):1–10.
National Medical Products Administration of China. Chinese medicine clinical research of new drugs guiding principles. Beijing: China Medical Science and Technology Press; 2002; p. 150–1 (in Chinese).
Bastian M, Heymann S, Jacomy M. Gephi: an open source software for exploring and manipulating networks. In: Third International AAAI Conference on Weblogs and Social Media. 2009;3(1):361-362.
Shavakhi A, Torki M, Khodadoostan M, et al. Effects of cumin on non-alcoholic steatohepatitis: a double blind, randomised, controlled trial. Adv Biomed Res. 2015;4:1.
Wong VWS, Wong GLH, Chan AWH, et al. Treatment of non-alcoholic steatohepatitis with P. hyllanthus urinaria: a randomised trial. J Gastroenterol Hepatol. 2013;28(1):57–62.
Rangboo V, Noroozi M, Zavoshy R, et al. The effect of artichoke leaf extract on alanine aminotransferase and aspartate aminotransferase in the patients with non-alcoholic steatohepatitis. Int J Hepatol. 2016;1:1.
Solhi H, Ghahremani R, Kazemifar AM, et al. Silymarin in treatment of non-alcoholic steatohepatitis: a randomised clinical trial. Caspian J Intern Med. 2014;5(1):9.
Long SS, Jang W, Dong YN, Wang WQ, Li RD. Clinical observation of self-proposed Xiaopi Huatan granules combined with Silibinin capsules in the treatment of non-alcoholic steatohepatitis with Phlegm-damp internal resistance syndrome. Guiding J Tradit Chin Med and Pharm. 2022;28(2):66–70 (in Chinese).
Sun XH, Qu YZ, Zhou F, Pei C, Sun J. Clinical efficacy observation of Paizhuo Jiangmei formula and western medicine on early non-alcoholic steatohepatitis with damp-heat accumulation syndrome. Shanxi J Tradit Chin Med. 2022;38(1):23–6 (in Chinese).
Tai L, Zeng YX, Fan RY, et al. Clinical effect of Quzhi Hugan decoction in treatment of non-alcoholic steatohepatitis with damp-turbidity stagnation: An analysis of 40 cases. Hunan J Tradit Chin Med. 2022;38(3):9–12 (in Chinese).
Wang F, Gao XX, Wang QQ. Short-term efficacy of Huanglian Jiedu decoction and probiotics supplement in intervention of patients with non-alcoholic steatohepatitis. J Prac Hepatol. 2022;25(2):235–8 (in Chinese).
Chen WL, Liang F, Zhang YC, et al. Observe on curative effect of Yuzha Quzhi Qinggan prescription combined with glutathinone in treating non-alcoholic fatty liver disease. Chin J Integr Tradit West Med Liver Dis. 2021;31(3):216–8 (in Chinese).
He QS, Liu Y, Xu CJ. Observation of therapeutic effect of Myrrha on non-alcoholic steatohepatitis. Inner Mongolia J Tradit Chin Med. 2021;40(4):7–10 (in Chinese).
Jin JJ. Clinical study on Shugan Huazhuo Tang combined with routine western medicine for non-alcoholic steatohepatitis. J New Chin Med. 2021;53(5):83–96 (in Chinese).
Lei XBP, Li XY, Dai YN, et al. Clinical observation of self-made Zhiyanping granule in the treatment of 45 Cases of non-alcoholic steatohepatitis. Chin J Ethnomed Ethnopharmacy. 2021;30(5):84–7 (in Chinese).
Lei YJ, Wang LL, Ye XD, Miu MJ, Zhu XQ. Clinical study on modified Chaihu Shugan Powder combined with Polyene Phosphati-dylcholine capsules for non-alcoholic steatohepatitis. J of New Chin Med. 2021;53(15):24–8 (in Chinese).
Liu XJ, Wang Y, Wang N, Zhang T. Clinical study on modified Chaishao Liujunzi decoction in treatment of non-alcoholic steatohepatitis with liver stagnation and slpeen deficiency syndrome. Chin J Inf Tradit Chin Med. 2021;28(1):113–7 (in Chinese).
Wang WL, Yan FJ, Xu ML, Gao C. Clinical study on Jiangzhi Tongmai capsules combined with routine therapy for non-alcoholic steatohepatitis. J New Chin Med. 2021;53(3):73–6 (in Chinese).
Zhang WH, Wu J, Li QY, et al. Efficacy of Gegen Qinlian Quzhuo decoction in treating type 2 diabetes patients with non-alcoholic fatty liver and its influence on the levels of sCD36 and ADRP.Chin J Integr Tradit West Med Liver Dis. 2021;31(9):792–5 (in Chinese).
Lin XM, Chen S, Tang YQ, Yang JL. Clinical observation of 40 cases of non-alcoholic steatohepatitis with spleen deficiency, phlegm and stagnation in the treatment of liver deficiency and spleen strengthening method. China’s Naturopathy. 2020;28(21):67–71 (in Chinese).
Zhang XX, Liu YD, Yang ChC. Clinical study on the treatment of non-alcoholic steatohepatitis with liver-preserving and detoxifying soup combined with silymarin. J of Tradit Chin Med. 2020;48(10):47–51 (in Chinese).
Zhou XM, Wang H, Wang Y. Effect of phlegm-dampness recipe on liver function and blood lipid index for patients with non-alcoholic steatosis hepatitis. J Sichuan Tradit Chin Med. 2020;38(2):105–7 (in Chinese).
Lan XM, Wu YN, Chen SD, et al. Treatment of non-alcoholic steatohepatitis by Zaozhu Yinchen recipe. Chin J Integr Tradit West Med. 2019;39(5):557–80 (in Chinese).
Sun SN, Wang Y. Clinical effects of self-made Linggui Zhugan Jiajian decoction combined with western medicine in the treatment of non-alcoholic fatty liver. Med Prac. 2019;14(9):65–8 (in Chinese).
Zhou HJ, Chen G, Xie HD. Clinical evaluation of Shen Ze Shugan capsule in the treatment of non-alcoholic steatohepatitis (Damp-heat Stagnation Syndrome). Tradit Chin Drug Res and Clin Pharmacol. 2019;30(9):1133–7 (in Chinese).
Zhou YP, Yang JL, Yang P, Chen S, Guo LH, Lyu XY. Prospective cohort study of “Eight Zhes” decoction in the treatment of non-alcoholic steatohepatitis. Chin J Mod Appl Pharm. 2019;36(17):2197–201 (in Chinese).
Zou JF. Effect of Shengjiang decoction on liver function and therapeutic effect in patients with non-alcoholic steatohepatitis of liver depression and spleen deficiency type. J Prac Tradit Chin Inter Med. 2019;33(9):57–9 (in Chinese).
Cai Z, Mai JY. Clinical effects of Shenge Granules on senile non-alcoholic steatohepatitis due to Spleen Deficiency and Phlegm Turbidity. Chin Tradit Pat Med. 2018;40(9):1935–8 (in Chinese).
Chen X, Zhang JF, Sun WD, Liang RS, Lu W. Clinical study of self-made Chinese medicines in treating non-alcoholic steatohepatitis of the Pixu Tanshi type. Chin J Integr Tradit West Med Liver Dis. 2018;28(5):82–4 (in Chinese).
Fan YW, Xie WP. Effect of soothing liver and strengthening spleen therapy in treating non-alcoholic steatohepatitis and analysis of changes in BMI and AC. Chin Med Modern Distance Education Chin. 2018;16(23):57–8 (in Chinese).
Li HS, Ying H, He XL, He ZY. Clinical observation of Qutan Huoxue decoction for treating non-alcoholic steatohepatitis. Chin Arch Tradit Chin Med. 2018;36(7):1554–6 (in Chinese).
Lin L, Liang HQ, Zhuang HL, et al. Effect of Zaozhu Yinchen recipe on intestinal flora in treatment of non-alcoholic steatohepatitis. Chin J Integr Tradit West Med. 2018;38(6):673–6 (in Chinese).
Liu JR, Zhu XN, Wang J, Peng ZX, Peng MY. Clinical evaluation of eliminating phlegm and activating blood granule in treating non-alcoholic steatohepatitis with syndrome of phlegm and blood stasis. World Lasest Med Information. 2018;18(98):28–30 (in Chinese).
Liu Y, Han XZ, Xu ML, He Y. Effect of Huanglian Jiedu decoction combined with Silybin capsule on non-alcoholic steatohepatitis with Damp-heat syndrome. J Basic Chin Med. 2018;24(9):1258–61 (in Chinese).
Mai JY, Gao YQ, Cai Z, Fang MQ. Shenge recipe in the treatment of senile non-alcoholic steatohepatitis with syndrome of phlegm turbidity due to spleen deficiency: a randomised, double-blind and placebo-controlled trial. Shanghai J TCM. 2018;52(2):44–8 (in Chinese).
Wu Di, Li JX, Xie CE, et al. Observing the effect of Yinchen Linggui prescription on NASH based on liver ultrasonic attenuation parameters. Chin J Integr Trad West Med Dig. 2018;26(10):817–22 (in Chinese).
Dai HY. Clinical observation of 16 cases of spleen deficiency and dampness in non-alcoholic steatohepatitis treated with Shenling Baizhu Powder. Hunan J of Tradit Chin Med. 2017;33(3):53–5 (in Chinese).
He Z, Zhao Q, He XP, et al. Effects of Quzhi Yugan granule to aadiponectin and interleukin-6 in the non-alcoholic steatohepatitis (NASH) patients. Guizhou Med J. 2017;41(10):1025–7 (in Chinese).
Hu Y, Mou HJ, Chen K. Clinical effect observation of Jianpishugan and Huoxuehuatan formula on liver depression and spleen deficiency induced non-alcoholic steatohepatitis. J Nangjing Univ Tradit Chin Med. 2017;33(4):359–62 (in Chinese).
Jiang YY, Lin J, Dong PL, Wang XP. Treatment of non-alcoholic steatohepatitis by Dahuang Lidan capsule. Chin J Integr Tradit West Med. 2017;37(5):539–42 (in Chinese).
Liu D, Li P, Wang JL, Jiang ZL, Li S. Clinical study on effect of Yinchenhao decoction in treating non-alcoholic fatty liver disease and the influence of the expression of TLR-4. Chin J Integr Tradit West Med Liver Dis. 2017;27(2):80–2 (in Chinese).
Liu M, Xu CJ, Li J, Wang C, Sun NN, Ding TJ. Clinical observation on the treatment of non-alcoholic steatohepatitis with hyperuricemia with the method of invigorating spleen and removing dampness, resolving phlegm and dredging collaterals. Chin J Integr Tradit West Med Liver Dis. 2017;27(4):222–4 (in Chinese).
Wang H. Curative effect of combination of traditional Chinese and Western medicine on chronic hepatitis B patients with non-alcoholic fatty liver disease. Chin J Integr Tradit West Med Liver Dis. 2017;27(3):153–5 (in Chinese).
Xin JP, Huang XF, Yang CY. Efficacy of the Tangfukang prescription on non-alcoholic steatohepatitis of the Pixu Tanshi type. Clin J Chin Med. 2017;9(4):102–3 (in Chinese).
Zhang YL, Wang XY, Ge ZX, Qi J. Clinical observation on the treatment of non-alcoholic fatty hepatitis of liver depression and spleen deficiency type with Chinese herbs for regulating the spleen, regulating the Liver, resolving phlegm and activating blood circulation. Beijing J Tradit Chin Med. 2017;36(7):636–9 (in Chinese).
Zhong BB, Tan SY. The clinical efficacy of Yinqin Qinggan Decoction in the treatment of non-alcoholic steatohepatitis and its effect on free fatty acids and TNF-α. J Sicahun Tradit Chin Med. 2017;35(9):69–71 (in Chinese).
Zhou LJ, Cai LW, Li WH. Evaluation of the efficacy of combined Chinese and Western medicine in the treatment of non-alcoholic steatohepatitis. J Clin Med. 2017;4(78):15274 (in Chinese).
Gao XF. Analysis on the efficacy and safety of Shugan Jianpi Formula in the treatment of non-alcoholic steatohepatitis. World Latest Med Inf. 2016;16(41):162–3 (in Chinese).
Qi TJ, Xu CJ, Li J, et al. Effective analysis of Shugan Jianpi Huoxue Huatan decoction in treating non-alcoholic fatty liver disease. Beijing J Tradit Chin Med. 2016;35(4):374–6 (in Chinese).
Tang JM, Liang HQ, Wang HG, Lin MT, Zhang LM, Chen SD. Efficacy of Zaozhu Yinchen recipe for treating non-alcoholic steatohepatitis and its effect on free fatty acid and TNF-α. Chin J Integr Tradit West Med. 2016;36(5):544–8 (in Chinese).
Tian F, Zhou RJ, Zhang JN, Li MX. Clinical efficacy of Jiangzhi Hugan Tang in treatment of non-alcoholic steatohepatitis. Chin J Exper Tradit Med Formul. 2016;22(7):182–6 (in Chinese).
Wang BC, Wang LL, Yuan JF. Clinical observation on expelling turbid and removing stagnation formula in the treatment of non-alcoholic steatohepatitis. World Chin Med. 2016;11(8):1468–70 (in Chinese).
Wang YX, Zang JW, Fu ZQ, Zhang JF, Cao HY. Clinical research of fatty liver with the treatment of strengthening behevior intervention combined with Bushenyiqi. Chin J Integr Tradt West Med Liver Dis. 2016;26(2):76–8 (in Chinese).
Yu S, Zhu JF, Lin Y, et al. Clinical observation of “Qinggan Jiangzhi decoction” in treating non-alcoholic steatohepatitis with spleen-deficiency and phlegm-stasis. Shanghai J Tradit Chin Med. 2016;50(9):45–7 (in Chinese).
Zhang T, Zhang RM, Kang WR, Wu JH. Yiqi Qizhu decoction in treating non-alcoholic steatohepatitis. Jiangxi J Tradit Chin Med. 2016;7(47):33–5 (in Chinese).
Zhang HY, Yu X, Xing LJ. Clinical observation on the effect of Jiang Zhi granules in the treatment of non-alcoholic fatty liver disease with damp-heat symdrome. Chin J Integr Tradit West Med Liver Dis. 2016;26(7):140–2 (in Chinese).
Zhang X, Li M. Curative effect of modified wumei decoction on non-alcoholic steatohepatitis with chronic obstructive pulmonary disease. Chin J Integr Tradit West Med Liver Dis. 2016;26(1):21–2 (in Chinese).
Chen SD, Yang JE, Wang HG, Lin MT, Tang JM, Liang HQ. Clinical study of Zaozhu Yinchen decoction in treating non-alcoholic fatty liver disease. Tradit Chin Med J. 2015;14(1):46–8, 64 (in Chinese).
Chen YF, Chen WX, Liu Y, Zhang HY, Li Kun. Clinical study on the treatment of traditional Chinese medicine or Western medicine combined behavioral intervention on abnormal glucose metabolism in non-alcoholic fatty liver. Chin J Integr Tradit West Med Liver Dis. 2015;25(2):80–3 (in Chinese).
Shan LL. Clinical study on the treatment of non-alcoholic fatty liver complicated with obesity with Quzhi Baogan formula. Asia-Pacific Tradit Med. 2015;11(22):123–4 (in Chinese).
Dong K. Analysis on the efficacy and safety of Shugan Jianpi Formula in the treatment of non-alcoholic steatohepatitis. World Latest Med Inf. 2015;15(78):163–4 (in Chinese).
Feng GF, Chen R. Clinical observation on treating non-alcoholic steatohepatitis with the Shengjiang decoction. Clin J Chin Med. 2015;7(14):14–6 (in Chinese).
Huang LY, Zheng C, Zhang X, et al. The clinical effect of strengthening spleen and excerting dampness decoction in the treatment of non-alcoholic steatohepatitis. Chin J Integr Tradit West Med Liver Dis. 2015;25(5):261–4 (in Chinese).
Li XJ. Clinical study on the treatment of patients with non-alcoholic steatohepatitis with optimised scheme of traditional Chinese medicine. Contemporary Med. 2015;21(13):385 (in Chinese).
Li Y, Li K, Shen TB. Effect of Qinghua decoction combined life-style intervening on 60 NASH patients with phlegmy syndrome. Chin J Integr Tradit West Med Liver Dis. 2015;25(1):18–20 (in Chinese).
Liu FR, Guo XJ, Li JP. 34 cases of non-alcoholic steatohepatitis treated with lipid reducing and liver tonics. Shaanxi Chin Med. 2015;36(1):8–9 (in Chinese).
Liu YG. Clinical study on the treatment of non-alcoholic steatohepatitis with Jiangzhi Huazhuo decoction and Bacillus licheniformis. Henan Tradit Chin Med. 2015;35(8):1833–5 (in Chinese).
Tang KB, Xia RX, Deng JH, Li LJ, Zhang Shu. The clinical effect of Jianpi Jiangzhi decoction combined with Wuling Fugan capsule in the treatment of spleen beficiency turbidity and blood stasis resistance type non-alcoholic fatty hepatitis. Progress in Modern Biomed. 2015;15(8):1495–7 (in Chinese).
Wang X. Observation of the effect of treating patients with non-alcoholic steatohepatitis with an optimal Chinese medicine therapy. Contemp Med Forum. 2015;13(12):38–9 (in Chinese).
Ye MQ. Evaluation of the efficacy of combined Chinese and Western medicine in the treatment of non-alcoholic steatohepatitis. J Chin Hepatol. 2015;20(6):462–7 (in Chinese).
Li JX, Wang YL, Liu M, et al. Treatment of non-alcoholic steatohepatitis by Jianpi Shugan recipe: a multi-center randomized controlled clinical trial. Chin J Integr Tradit West Med. 2014;34(1):15–29 (in Chinese).
Li SF, Mao MH, Yuan C. Observation on therapeutic effect of Xiaozhi Pinggan capsule on non-alcoholic steatohepatitis. Shaanxi J Tradit Chin Med. 2014;35(10):1379–80 (in Chinese).
Liu J, Xue JH, Wu YX, Zhong RS. Clinical study of Ruangan Jiangzhi capsule in treating non-alcoholic fatty liver disease. Jiangsu J Tradit Chin Med. 2014;46(2):31–2 (in Chinese).
Yu JP, Feng LY, Chen X, Chen J. Polyene phosphatidyl choline joint fuzheng huayu capsule in treating non-alcoholic fatty hepatitis. Chin J General Prac. 2014;12(8):1325–6 (in Chinese).
Zheng H. 72 cases of non-alcoholic steatohepatitis treated with integrated traditional chinese and western medicine. Chin Med Modern Dist Educ Chin. 2014;12(16):136–7 (in Chinese).
Hou GH, Wang HL, Zhou HX, et al. Effect of Jianpi Tiaozhi Huayu recipe combined with Metformin tablet in the treatment of obesity and non-alcoholic steatohepatitis. Chin J Integr Trad West Med Dig. 2013;21(1):11–4 (in Chinese).
Huang MH, Chen XR. Observation on the therapeutic effect of Zhigankang on non-alcoholic steatohepatitis. Infor Tradit Chin Med. 2013;30(2):31–2 (in Chinese).
Li HS, Feng Q, Zhu DD, Ying H, Li DZ, Fu QL. Clinical observation on Qushi Huayu decoction for 82 cases of non-alcoholic steatohepatitis with phlegm—stasis accumulation syndrome. Chin Arch Tradit Chin Med. 2013;31(8):1764–7 (in Chinese).
Qiu XY. 45 cases of non-alcoholic steatohepatitis treated with the combination of Shugan Huazhuo Formula and Yishanfu. Chin J Integr Tradit West Med Liver Dis. 2013;23(3):174–5 (in Chinese).
Wang JZ. Clinical effect on Xiao Zhi prescription treating 42 cases of non-alcoholic steatohepatitis. World Chin Med. 2013;8(7):752–4 (in Chinese).
Wei CS, Tang HH, Tong GD. Treatment of non-alcoholic steatohepatitis with liver de-lipidizing formula combined with polyene-phosphatidylcholine Clinical study of 36 cases of steatohepatitis. Jiangsu J Tradit Chin Med. 2013;45(7):17–9 (in Chinese).
Zhan BL, Zhang L, Li Q. Observation on treating NASH with Baohe pill combined with polyene-phosphatidylcholine capsule. Clinical J of Chin Med. 2013;5(2):22–4 (in Chinese).
Chen X, Wu L, Huang YR. Clinical study of Jindanwang mixture on non-alcoholic steatohepatitis. Chin J Integr Tradit West Med Liver Dis. 2012;22(2):94–6 (in Chinese).
Chen ZQ, Tu YY. Curative effect analysis of Jiangzhi Baogan decoction in non-alcoholic steatohepatitis patients of phlegm-stasis syndrome. J Liaoning Univ TCM. 2012;14(1):155–7 (in Chinese).
Ling JS, Song B, Huang XH. 31 cases of non-alcoholic steatohepatitis treated with dampness, phlegm and stasis removal method. Shaanxi J Tradit Chin Med. 2012;33(9):1118–20 (in Chinese).
Lu J, Wang CB, Wang J, Shi FB, Li YP, Xie TX, Zhang LM. Effect of Chinese herbal medicine on peripheral blood T lymphocyte subsets and liver function in patients with non-alcoholic steatohepatitis. J Clin Hepatol. 2012;15(2):133–4 (in Chinese).
Pei Q, Wang XS, Wang XB, et al. Clinical study of Qinggan Huatan Huoxue recipe on the treatment of non-alcoholic steatohepatitis. Chin J Integr Tradit West Med. 2012;32(1):29–31 (in Chinese).
Qian YL, Chen WM. Clinical study on 220 cases of non-alcoholic steatohepatitis treated with “aromatic fat elimination formula” in various Chinese medical symptoms. Jiangsu Tradit Chin Med. 2013;44(12):19–20 (in Chinese).
Wang JH. 40 cases of non-alcoholic steatohepatitis treated with blood activation and lipid-lowering formula. Chin J Integr Tradit West Med Liver Dis. 2012;22(4):246–7 (in Chinese).
Wang YP, Zheng X, Zhang ZY, et al. Clinical observation of “Yigan Jiedu decoction” in treating non-alcoholic steatohepatitis of phlegm and blood-stasis accumulation. Shanghai J Tradit Chin Med. 2012;46(12):25–7 (in Chinese).
Zhang XJ. Observations on the efficacy of liver protection and lipid-lowering formula in the treatment of non-alcoholic steatohepatitis. Prac Clinical J Integr Tradit Chin West Med. 2021;12(1):30–1 (in Chinese).
Zhao WX, Liu JY, Meng XL. Effect of Huatan Xiezhuo recipe combined exercise and dietary treatment on TG/ALT/BMI levels in patients with non-alcoholic steatohepatitis. Chin J Tradit Chin Med Pharm. 2021;27(3):654–6 (in Chinese).
Gu BY, Zhang QH, Ma GJ, Zhang X, Zhang J, Zhang AN. Clinical observation on Zhigan capsule for 50 cases of non-alcoholic steatohepatitis. Guid J Tradit Chin Med Pharm. 2011;17(1):39–41 (in Chinese).
Wang YX, Xu Z, Fei M. Clinical study on the treatment of fatty liver by tonifying the kidneys and benefiting the spleen. Chin J of Basic Chin Med. 2011;17(3):296–7 (in Chinese).
Zhang SJ, Q YY, Qian H, et al. Clinical study on Kangzhi decoction in treating 92 cases of non-alcoholic fatty liver disease differentiated as syndrome type of spleen as thenia as dampness heat. Chin J Integr Tradit West Med Liver Dis. 2011;21(2):71–3 (in Chinese).
Zhao WX, Liu QZ, Xia JY, et al. Clinical trial of Chinese medicine for the treatment of non-alcoholic steatohepatitis. Chin J Exp Tradit Med Formulae. 2011;17(23):246–9 (in Chinese).
Li J, Wang XY. Clinical observation on the treatment of non-alcoholic steatohepatitis by combining Spleen and Liver Pill with Silymarin capsule. Chin J Inf TCM. 2010;17(1):68–9 (in Chinese).
Liang DY, Ge Y, Shen CG. Clinical study on the treatment of non-alcoholic steatohepatitis with the formula of strengthening the spleen and removing turbidity. Contemp Med. 2010;16(21):19–21 (in Chinese).
Lin ZR, Fan H, Deng X, Wu WK. Observation on the therapeutic effect of 57 cases of non-alcoholic steatohepatitis treated with self-made Jianpi Huatan recipe. Chin J Integr Tradit West Med Liver Dis. 2010;20(1):48–9 (in Chinese).
Ma J, Sun Y, Huang RZ. Curative effect of Qinggan Xiaozhi decoction on non-alcoholic steatohepatitis. Prac Clin J Integr Tradit Chin West Med. 2010;10(2):5–6 (in Chinese).
Chen HP, Yao J, Chen ZD, Gao YQ. Clinical study of Shenge decoction and dietotherapy, kinesitherapy on non-alcoholic fatty hepatitis. Chin J Integr Tradit West Med Liver Dis. 2009;19(5):273–5 (in Chinese).
Li X, Xing L, Sun LH, Wang L. Clinical observation of 38 patients with curing non-alcohol fatty Liver treated by using antilipemic and protecting liver decoction. J Liaoning Univ TCM. 2009;11(5):114–5 (in Chinese).
Wang SL. Treatment of non-alcoholic steatohepatitis with the method of tonifying the spleen, raising the yang and dipping the fire in 43 cases. Shandong J Tradit Chin Med. 2009;28(9):604–5 (in Chinese).
Zhang AJ, Lu YJ, Chen XR. Clinical observation of “Qinggan Huayu Decoction” in treating hepatic fibrosis following non-alcoholic fatty liver diseases. Shanghai J Tradit Chin Med. 2009;43(6):33–5 (in Chinese).
Zhang SJ, Chen ZX, Jiang KP, et al. The effect of QuYuHuaTanTongLuo Decoction on the non-alcoholic steatohepatitis. Complement Ther Med. 2008;16(4):192–8.
Li XY. Treatment of 45 cases of non-alcoholic fatty hepatitis with Zhibitai capsule. Shaanxi Chin Med. 2008;29(12):1643 (in Chinese).
Lu WL, Zhao BL. Treatment of 40 cases of non-alcoholic steatohepatitis with the method of resolving phlegm and relieving depression. TCM Res. 2008;21(6):37–9 (in Chinese).
Sun LH, Chen YL, Huang XA. 31 cases of non-alcoholic steatohepatitis treated with the Pinggan Huoxue formula. Shangdong J Tradit Chin Med. 2008;27(5):297–9 (in Chinese).
Wang HB, Wei L, Jin HW, Wei ZM. Clinical observation on the treatment of non-alcoholic steatohepatitis and fibrosis with integrated traditional Chinese and western medicine. Herald of Med. 2007;26(9):1035–6 (in Chinese).
Yang HR, Yang ZY, Xiang RY, Yang SZ. Clinical study on treatment of fatty liver by Yigan Jiangzhi capsule. Chin J Integr Tradit West Med Liver Dis. 2007;17(1):56–7 (in Chinese).
Chande N, Laidlaw M, Adams P, et al. Yo Jyo Hen Shi Ko (YHK) improves transaminases in non-alcoholic steatohepatitis (NASH): a randomised pilot study. Dig Dis Sci. 2006;51(7):1183–9.
Chen L, Jiang YK, Cai YB. Effects of Resolving Phlegm Method on Fibrinolytic Status in Non-alcoholic Steatohepatitis Patients of Phlegm and Blood-stasis Syndrome. Chin J Integr Tradit West Med. 2006;26(12):1090–3 (in Chinese).
Bai J, Chang YH, Bai YC, et al. Effect of combination traditional Chinese and Western medicine on transform in growth factor-β_1 in treatment of non-alcoholic steatohepatitis. Chin General Clin. 2005;21(8):705–7 (in Chinese).
Li YS, Hu SL. Chinese herbal medicine combined with Alto Moran for non-alcoholic steatohepatitis. Zhengjiang J Integr Tradit Chin West Med. 2005;15(10):608–9 (in Chinese).
Luo CJ, He QH, Jiang DC, Lan J. A clinical observation on NASH by treatment based on comprehensive analysing symptoms and diseases. Chin J Integr Tradit West Med Liver Dis. 2004;14(5):272–4 (in Chinese).
Professional Committee of Digestive System Diseases, Chinese Society of Integrative Medicine. Consensus opinions on diagnosis and treatment of non-alcoholic fatty liver disease with integrated traditional Chinese and western medicine. Chin J Integr Tradit West Med. 2011;31(2):155–8 (in Chinese).
Professional Committee of Digestive System Diseases, Chinese Society of Integrative Medicine. Consensus opinions on diagnosis and treatment of non-alcoholic fatty liver disease with integrated traditional Chinese and western medicine. Chin J Integr Tradit West Med. 2017;25(11):805–11 (in Chinese).
The Chinese National Workshop on Fatty Liver and Alcoholic Liver Disease for the Chinese Liver Disease Association the Chinese Liver Disease Association. Guidelines for management of alcoholic liver disease an updated and revised edition. Chin J Hepatol. 2010;18(3):167–70 (in Chinese).
National Administration of Traditional Chinese Medicine. Diagnostic efficacy criteria for TCM diseases. 1994;56.
Zhao C, Zhou Y, Ping J, et al. Traditional Chinese medicine for treatment of liver diseases: progress, challenges and opportunities. J Integr Med. 2014;12(5):401–8.
Shi T, Wu L, Ma W, et al. Non-alcoholic fatty liver disease: pathogenesis and treatment in traditional Chinese medicine and western medicine. Evidence Based Complement Altern Med. 2020;1:1.
Ying-Rong L, Zhang MH, Jian-Guang LUO, et al. Pathogenesis of NASH and promising natural products. Chin J Nat Med. 2021;19(1):12–27.
Wang T, Huang S, Wu C, Wang N, Zhang R, Wang M, Mao D. Intestinal microbiota and liver diseases: insights into therapeutic use of traditional chinese medicine. Evid Based Complement Alternat Med. 2021;22(2021):6682581. https://doi.org/10.1155/2021/6682581.
Lee TY, Chang HH, Lo WC, Lin HC. Alleviation of hepatic oxidative stress by Chinese herbal medicine Yin-Chen-Hao-Tang in obese mice with steatosis. Int J Mol Med. 2010;25(6):837–44. https://doi.org/10.3892/ijmm_00000412.
Browning JD, Horton JD. Molecular mediators of hepatic steatosis and liver injury. J Clin Invest. 2004;114(2):147–52. https://doi.org/10.1172/JCI22422.
Belfort R, Harrison SA, Brown K, et al. A placebo-controlled trial of pioglitazone in subjects with nonalcoholic steatohepatitis. N Engl J Med. 2006;355(22):2297–307. https://doi.org/10.1056/NEJMoa060326.
Wang YL, Liu LJ, Zhao WH, Li JX. Intervening TNF-α via PPARγ with gegenqinlian decoction in experimental nonalcoholic fatty liver disease. Evid Based Complement Alternat Med. 2015;2015:715638.
Yuanyuan W, Minghua J, Lina Z, Suhua L, Jiayu Z, Yongzhi S, Chunyu C, Jian Q. Effect of a combination of calorie-restriction therapy and Lingguizhugan decoction on levels of fasting blood lipid and inflammatory cytokines in a high-fat diet induced hyperlipidemia rat model. J Tradit Chin Med. 2015;35:218–21.
Li T, Han JY, Wang BB, et al. Huanglian jiedu decoction regulated and controlled differentiation of monocytes, macrophages, and foam cells: an experimental study. Zhongguo Zhong Xi Yi Jie He Zazhi. 2014;34:1096–102 (in Chinese).
Zhang A, Sun H, Wang X. Potentiating therapeutic effects by enhancing synergism based on active constituents from traditional medicine. Phytother Res. 2014;28(4):526–33.
Wang X, Zhang A, Wang P, et al. Metabolomics coupled with proteomics advancing drug discovery toward more agile development of targeted combination therapies. Mol Cell Proteomics. 2013;12(5):1226–38.
Weiskirchen R, Mahli A, Weiskirchen S, et al. The hop constituent xanthohumol exhibits hepatoprotective effects and inhibits the activation of hepatic stellate cells at different levels. Front Physiol. 2015;6:140.
Huang L, Zhang Y, Zhang X, et al. Therapeutic potential of Pien-Tze-Huang: a review on its chemical composition, pharmacology, and clinical application. Molecules. 2019;24(18):3274.
Mu Y, Liu P, Du G, et al. Action mechanism of Yi Guan Jian Decoction on CCl4 induced cirrhosis in rats. J Ethnopharmacol. 2009;121(1):35–42.
Zhou YN, Mu YP, Fu WW, et al. Yiguanjian decoction and its ingredients inhibit angiogenesis in carbon tetrachloride-induced cirrhosis mice. BMC Complement Altern Med. 2015;15(1):1–9.
Shui S, Shen S, Huang R, et al. Metabonomic analysis of biochemical changes in the plasma and urine of carrageenan-induced rats after treatment with Yi-Guan-Jian decoction. J Chromatogr B. 2016;1033:80–90.
Wei D, Liao S, Wang J, et al. Cholestatic liver injury model of bile duct ligation and the protection of Huang-Lian-Jie-Du decoction by NMR metabolomic profiling. RSC Adv. 2015;5(81):66200–11.
Wei DD, Wang JS, Duan JA, et al. Metabolomic assessment of acute cholestatic injuries induced by thioacetamide and by bile duct ligation, and the protective effects of Huang-Lian-Jie-Du-decoction. Front Pharmacol. 2018;9:458.
Lu J, Wang JS, Kong LY. Anti-inflammatory effects of Huang-Lian-Jie-Du decoction, its two fractions and four typical compounds. J Ethnopharmacol. 2011;134(3):911–8.
Li T, Han JY, Wang BB, et al. Huanglian jiedu decoction regulated and controlled differentiation of monocytes, macrophages, and foam cells: an experimental study. Chin J Integr Tradit Western Med. 2014;34(9):1096–102 (in Chinese).
Jin J, Zhang Y, Hu WX, et al. Effects of Huanglian Jiedu Decoction on blood lipid metabolism and its related gene expressions in rats with hyperlipidemia. J Chin Integr Med. 2010;8(3):275–9 (in Chinese).
Yu YL, Lu SS, Yu S, et al. Huang-lian-jie-du-decoction modulates glucagon-like peptide-1 secretion in diabetic rats. J Ethnopharmacol. 2009;124(3):444–9.
Park S, Hong SM, Ahn IS, et al. Huang-Lian-Jie-Du-Tang supplemented with Schisandra chinensis Baill. and Polygonatum odoratum Druce improved glucose tolerance by potentiating insulinotropic actions in islets in 90% pancreatectomised diabetic rats. Biosci Biotechnol Biochem. 2009;73(11): 2384–2392.
Dang Y, Hao S, Zhou W, et al. The traditional Chinese formulae Ling-Gui-Zhu-Gan decoction alleviated non-alcoholic fatty liver disease via inhibiting PPP1R3C mediated molecules. BMC Complement Altern Med. 2019;19(1):1–11.
Cai FF, Bian YQ, Wu R, et al. Yinchenhao decoction suppresses rat liver fibrosis involved in an apoptosis regulation mechanism based on network pharmacology and transcriptomic analysis. Biomed Pharmacother. 2019;114:108863.
National Administration of Traditional Chinese Medicine of China. Catalog of antient classic traditional Chinese medicine prescriptions. 2018. http://www.satcm.gov.cn/kejisi/zhengcewenjian/2018-04-16/7107.html. Accessed 31 Sept 2022.
Ye H, Zheng C, Xu X, et al. Potential synergistic and multitarget effect of herbal pair Chuanxiong Rhizome-Paeonia Albifora Pall on osteoarthritis disease: a computational pharmacology approach. Chin J Integr Med. 2011;17(9):698–703.
Li L, Lan X, Peng X, et al. Polysaccharide from salviae miltiorrhizae radix et rhizoma attenuates the progress of obesity-induced non-alcoholic fatty liver disease through modulating intestinal microbiota-related gut-liver axis. Int J Mol Sci. 2022;23(18):10620.
Biao Y, Chen J, Liu C, et al. Protective effect of danshen Zexie decoction against non-alcoholic fatty liver disease through inhibition of ROS/NLRP3/IL-1β pathway by Nrf2 signaling activation. Front Pharm. 2022;2446:1.
Wu L, Yan Q, Chen F, et al. Bupleuri radix extract ameliorates impaired lipid metabolism in high-fat diet-induced obese mice via gut microbia-mediated regulation of FGF21 signaling pathway. Biomed Pharmacother. 2021;135:111187.
Povsic M, Wong OY, Perry R, et al. A structured literature review of the epidemiology and disease burden of non-alcoholic steatohepatitis (NASH). Adv Ther. 2019;36(7):1574–94.
Filozof C, Chow SC, Dimick-Santos L, et al. Clinical endpoints and adaptive clinical trials in precirrhotic non-alcoholic steatohepatitis: facilitating development approaches for an emerging epidemic. Hepatol Commun. 2017;1(7):577–85.
Sanyal AJ, Brunt EM, Kleiner DE, et al. Endpoints and clinical trial design for non-alcoholic steatohepatitis. Hepatology. 2011;54:344–53.
We are grateful for the comments from our colleagues at the University of Macau on the early visions. We also would like to thank Liyang Lyu from ICMS, University of Macau for her comments to this paper.
This project is supported by a grant from the State Key Laboratory of Quality Research in Chinese Medicine (University of Macau) (QRCMIRG2022-009) and a grant of the University of Macau (MYRG2022-00113-ICMS).
Ethics approval and consent to participate
Consent for publication
The authors declare that they have no competing interests.
Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
Additional file1. Table S1
: Inclusion criteria of the included studies.
Additional file 2. Table S2
: Exclusion criteria of the included studies.
Additional file 3. Table S3
: Efficacy criteria of TCM syndrome efficacy and cure cases reports.
Additional file 4. Table S4
: Diagnostic criteria and cure of overall clinical efficacy.
Rights and permissions
Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated in a credit line to the data.
About this article
Cite this article
Chen, X., Shi, J., Lai, Y. et al. Systematic analysis of randomised controlled trials of Chinese herb medicine for non-alcoholic steatohepatitis (NASH): implications for future drug development and trial design. Chin Med 18, 58 (2023). https://doi.org/10.1186/s13020-023-00761-5
- Non-alcoholic steatohepatitis
- Traditional Chinese medicine
- Randomised controlled trial
- Clinical trial design