Table 2.

Ingredients and usages of Chinese herbal medicine.

Study ID	Chinese medicine decoction	Main ingredients and usage
Chen [23] China	Ban-xia-xie-xin-tang	Banxia 9 g, huangqin 30 g, huanglian 15 g, ganjiang 15 g, dangshen 12 g, shengyimi 30 g, gouqi 30 g. Add or subtract Chinese herbals according to symptoms. Decoction, 150 ml per dose. One dose each time, two times a day, once in the morning and once in the evening.
Fang et al. [25] China	Wen-shen-tiao-jing-tang	Zishiying 15 g, xianlingpi 15 g, chuanduan 10 g, tusizi 15 g, baishao 10 g, heshouwu 15 g, xiangfu 10 g, danggui 15 g, chuanniuxi 10 g, chuanjiao 10 g. Decoction in water, 1 dose a day, 250 ml per dose, orally two times, once in the morning and once in the evening.
Hong et al. [22] China	Jian-pi-qu-tan-tong-Luo-tang	Baizhu 15 g, dangshen 15 g, fuling 15 g, cangzhu 15 g, xiangfu 15 g, xianglingpi 15 g, guizhi 10 g, chaihu 10 g, danggui 15 g, taoren 10 g, shudihuang 15 g, jixueteng 15 g, chenpi 10 g. Decoction, 200 ml, 1 dose/time, 2 times/day.
Li [24] China	Wu-ji-san, powdered medicine.	Baizhi 9 g, chuanxiong 9 g, gancao 9 g, fuling 9 g, danggui 9 g, rougui 9 g, baishao 9 g, jiangbanxia 9 g, shengmahuang 9 g, chenpi 18 g, zhiqiao 18 g, cangzhu 30 g, ganjiang 10 g, jiegeng 12 g, houpo 12 g. Dissolve the medicine powder with 300 ml warm boiled water and take it two times a day, once in the morning and once in the afternoon. Do not stop taking the medicine during menstruation.
Liang et al. [31] China	HYKT (Heyan Kuntai capsule)	Dihuang, huanglian, baishao, huangqin, ejiao, fuling. 3 times a day, 4 capsules each time.
Liang [28] China	Zi-shen-qing-re-li-shi-hua-yu-fang (granules).	Zhimu 10 g, shanzhuyu 10 g, danshen 10 g, taoren 10 g, yiyiren 15 g, baijiezi 10 g, huangbai 10 g, xuanshen 10 g, gancao 6 g. Boil 1 sachet in water two times a day, take in the morning and evening, drink while still warm.
Luo [30] China	Bu-shen-hua-tan-qu-yu-fang	Tusizi 15 g, xianlingpi 15 g, roucongrong 15 g, shengdi 15 g, danggui 12 g, chuanxiong 6 g, zelan 15 g, fuling 15 g, fabanxia 10 g, cubiejia 12 g, zaojiaoci 15 g, gancao 6 g. Take one dose a day, decoct to 300 ml, and take it twice per day, once in the morning and once in the evening. Stop taking during menstruation.
Wanget al. [20] China	Cang-fu-dao-tan-tang modified	Cangzhu 12 g, xiangfu 12 g, chenpi 15 g, fabanxia 15 g, zaojiaoci 15 g, danggui 12 g, chuanxiong 12 g, shichangpu 12 g, fuling 20 g, danshen 30 g, heye 15 g, shanyao 15 g, huangqi 30 g, xianlingpi 15 g, lujiaoshuang 12 g, zishiying 30 g, sharen 6 g, chuanniuxi 15 g. Take 1 dose a day. Decoct in water two times, drink while warm, once in the morning and once in the evening. Start taking it from the 10th day of menstruation and stop taking it during menstruation, and continue for 3 consecutive months.
Zhao et al. [27] China	Yang-yin-yi-qi-huo-xue-fang	Gouqizi 10 g, ejiaozhu 10 g, zhihuangjing 10 g, hanliancao 10 g, buguzhi 10 g, nvzhenzi 10 g, digupi 10 g, maidong 10 g, nanshashen 10 g, beishashen 10 g, ziheche 10 g, shengdi 10 g, shengbaishao 10 g, huangqi 30 g, gancao 6 g. Add or subtract Chinese herbs according to menstrual symptoms.
Zhao et al. [26] China	Yang-yin-yi-qi-huo-xue-fang	Ejiaozhu 10 g, huangqin 10 g, huangbo 10 g, hanliancao 10 g, buguzhi 10 g, nvzhenzi 10 g, digupi 10 g, maidong 10 g, nanshashen 10 g, beishashen 10 g, shengbaishao 10 g, huangqi 30 g, gancao 6 g, ziheche 3 g. Add or subtract Chinese herbs according to menstrual symptoms.
Zheng [21] China	Duo-nang-yin	Tusizi 15 g, bajitian 10 g, chaihu 10 g, yinyanghuo 10 g, baishao 10 g, longdancao 6 g. Add or subtract Chinese herbs according to symptoms. Soak the herbs in 300 ml of water for 30 minutes, then boil with high heat and then simmer for 20 minutes. Take 200 ml of the first decoction, then add 200 ml of water and continue to decoct for 15 minutes. Take 150 ml of the second decoction, mix with the first 200 ml, and divide it into two doses. Take each dose in the morning and evening.