There is a laxative effect within Fatty Pill, so there is no such thing as how long after taking it you can get diarrhea. Fei Er Pill is to respect the Chinese patent medicine, composed of nutmeg, mukong, six Shenqu, malt, hu huanglian, betel nut, make the gentleman kernel, with stomach-healthy elimination of accumulation, the efficacy of insect repellent. It is used for children’s indigestion, abdominal pain of worms accumulation, yellow muscle thinness, low food and abdominal distension and diarrhea. The adverse reactions and contraindications of this drug are not clear. Patients with constipation can take medicines such as Ma Zi Ren Pill and Jichuan Decoction for treatment under the guidance of a doctor. If you need to use fat child pill, you should take it under the guidance of the physician’s diagnosis, do not take the drug on your own, if you have adverse reactions after taking it, you should consult a doctor in time.