Table 2 Prescription frequencies of CHPs containing phytoestrogen ^a * and cumulative average original weights of the five major Chinese herbs stratified by age, based on a one-million patient random sample (1997–2007) from the NHI system of Taiwan

Chinese herbal products

≤ 9

10-19

20-29

30-39

40-49

50-59

60-69

70-79

≥ 80

Total licensed CHPs

252,268

594,059

1,069,122

1,368,722

1,332,924

818,922

496,445

268,747

69,604

Licensed CGD-CHPs.

62,140

135,716

220,967

307,731

301,586

186,354

108,348

54,060

12,342

Average dosage per woman-year (g) ^a

 Puerariae Fructus

10.2

18.0

14.5

15.9

17.9

21.3

21.0

22.0

21.3

 Puerariae Radix

25.8

27.8

29.2

33.7

37.0

39.0

41.4

41.5

40.4

 Sojae Semen Praeparatum

8.6

9.5

9.6

11.0

11.4

11.4

12.4

11.3

10.5

 Sophorae Flavescentis Radix

9.0

10.5

10.9

10.9

10.7

10.5

10.8

10.6

11.4

 Sophorae Flos

15.9

24.6

27.3

33.5

35.5

37.3

36.4

49.9

34.3