Frequency and pattern of Chinese herbal medicine prescriptions for urticaria in Taiwan during 2009: analysis of the national health insurance database

Table 4 The most common two-drug combinations of Chinese herbal medicines in a single prescription for urticaria

Chinese herbal formulae or drugs		No. of prescriptions	Support
First	Second	No. of prescriptions	Support
Xiao Feng San	Dictamnus dasycarpus Turcz	8938	9.33%
Xiao Feng San	Kochia scoparia	8057	8.41%
Xiao Feng San	Jing Fang Bai Du San	6252	6.53%
Xiao Feng San	Paeonia suffruticosa Andr	6044	6.31%
Kochia scoparia	Dictamnus dasycarpus Turcz	5475	5.72%
Xiao Feng San	Cryptotympana atrata Fabr	5037	5.26%
Xiao Feng San	Smilax lanceifolia Roxb	4523	4.72%
Xiao Feng San	Forsythia suspensa	4386	4.58%
Xiao Feng San	Dang Gui Yin Zi	4325	4.52%
Xiao Feng San	Semen coicis	4212	4.40%