Chen, et al. treated 30 cases of IBS with a formula called Yi Chang Jian (intestine-invigorating formula). The formula consisted of Chen Pi, Ban Xia, Hou Pu, Chao Bai Zhu, Fu Ling, Su Gen, Bai Shao, Sha Ren, Gan Cao, and Jiao San Xian. Modifications were made to suit individual patients' symptoms. One dose of the formula in water decoction was administered daily. A comparison group of 30 cases was treated with Shu Te (50mg each time, three times a day). One unit of treatment was 4 weeks for both groups. The results: of the treatment group, 7 cases significantly improved, 19 improved, and 4 did not respond to the treatment, with a total effective rate of 86.7%; of the comparison group, the corresponding number were 4, 20, 6, and 80%.( 4)
Yan, et al. treated 39 cases of IBS with a formula called Shu Gan Jian Pi Qing Chang Tang (liver-soothing, spleen-invigorating, and intestine-cleansing formula). The formula consisted of Huang Qi, Bai Zhu, Fu Ling, Chai Hu, Zhi Ke, Chi Shao, Bai Shao, and Xiang Fu, E Zhu, Gou Teng, He Huan Pi, Huang Qin, Tie Xian Cai, and Gan Cao. One dose of the formula in water decoction was administered daily, and one unit of treatment lasted 30 days. The results: after one unit of treatment, of the treatment group, 14 cases significantly improved, 21 improved, 4 did not respond to the treatment; the corresponding numbers for the comparison group were 3, 15, and 13. The difference between the two groups was significant (P<0.01).( 5)
Qiu, et al. treated 36 cases of IBS with a modification of the formula Qin Shao Tang (scutellaria and peony combination). The modified formula consisted of Huang Qin, Bai Shao, Huang Lian, Gan Cao, Mu Xiang, Zhi Shi, Xing Ren, Hou Pu, Chen Pi, Hua Shi, and Dang Gui. Further modifications were made to suit individual patients' symptoms. One dose of the formula in water decoction was administered daily, and seven days constituted one unit of treatment. The results: after 1-2 units of treatment, 29 cases were recovered, 5 significantly improved, 2 improved, with a total effective rate of 100%.( 6)
Weng treated 78 cases of IBS with a formula called Sheng Yang Yi Wei Tang (spleen yang-elevating and stomach-invigorating formula). The formula consisted of Huang Qi, Dang Shen, Ban Xia, Zhi Gan Cao, Bai Zhu, Bai Shao, Chen Pi, Fu Ling, Fang Feng, Qiang Huo, Du Huo, Chai Hu, Ze Xie, Huang Lian, Sheng Jiang, and Da Zao. Modifications were made to suit individual patients' symptoms. One dose of the formula in water decoction was administered daily. One unit of treatment lasted 15 days, and a three-day break was instituted between units of treatment. The results: after two units of treatment, 47 cases significantly improved, 23 improved, 8 did not respond to the treatment, with a total effective rate of 89.7%.( 7)
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