During the period of taking Weichang'an Pill, the patient may have side effects such as dizziness of the head, diarrhea or increased menstruation in women. Weichang'an Pill is a kind of Chinese patent medicine, which can play the role of aromatizing turbidity, regulating qi, relieving pain, and strengthening stomach and removing stagnation. It is suitable for those who are in the middle of dampness and turbidness, and whose food stagnation is not resolved according to the syndrome differentiation of traditional Chinese medicine. Its clinical symptoms mainly include diarrhea, not wanting to eat, reduced actual food intake, nausea, vomiting, and abdominal fullness accompanied by pain. In addition, people with indigestion, enteritis and dysentery in western medicine can also use this medicine. This medicine is suitable for taking on an empty stomach. Just take it directly with warm boiled water. Athletes should use this medicine carefully.