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Table 7 Open issues about prescribing Kampo medicine (n = 285)

From: The clinical use of Kampo medicines (traditional Japanese herbal treatments) for controlling cancer patients’ symptoms in Japan: a national cross-sectional survey

Issue

frequency

%

The dose and dosage forms need to be better devised for simpler application

173

60.7

No evidence of efficacy from placebo-controlled studies

109

38.2

Action mechanism of Kampo medicine is not yet elucidated

97

34.0

No opportunity to learn about Kampo medicines

90

31.6

Relatively weak effect

79

27.7

Drug interaction is uncertain

66

23.2

Production of effect is slow

56

19.6

Others

25

8.8

There are no issues

12

4.2

  1. Multiple answers allowed.