The efficacy of Huanglian Houpu Tang varies according to the source of the formula and the composition of the medicines. For example, Huanglian Houpu Tang is used to treat menstrual disorders in Shengji Zonglu (General Records of Shengji), and Huanglian Houpu Tang is used to treat fever and thirst caused by typhoid fever (a disease in which fever is caused by feeling cold) in Pujifang (General Records of Puji). 1. Huanglian Houpu Tang (黄黄连厚朴汤) contained in “General Records of Shengji” is composed of 15 Chinese medicines including Huanglian (黄黄连), Houpu (厚朴), Sang’er (桑耳), Poria (茯神) and Tianxiong (天雄). It is effective in treating irregular menstruation. 2. Huanglian Houpu Tang (《普济方》) is composed of two herbs, Huanglian (黄黄连) and Houpu (厚朴). It is effective in treating fever and thirst caused by typhoid fever, and spontaneous profiting from stools day and night. 3. Huanglian Houpu Tang (黄黄连厚朴汤) is composed of Huanglian (黄黄连), Houpu (厚朴), Agrimony (阿胶), Angelica sinensis (当归), Ai Ye (艾叶), Cypress (黄柏) and Ginger (干姜). It is effective in treating abdominal pain in pregnancy and dysentery with pus and blood (diarrhea with pus and blood in the feces). None of the above formulae is in common clinical use, and information on contraindications, adverse reactions and precautions for use are not available. If you need to use Huanglian Houpu Tang, it should be prescribed by a professional Chinese medicine practitioner after diagnosis, and should not be used on your own to avoid adverse effects on the body.