The efficacy of Chicken Nei Jin San is to eliminate food stagnation (digestion of stagnant food). It is used to treat food stagnation (food that is indigested and stagnates in the stomach), flatulence, frequent urination, and enuresis. Chicken Neijin San is a Chinese herbal formula mainly composed of chicken neijin. It has the efficacy of eliminating food stagnation, strengthening the spleen and stopping diarrhea (strengthening the spleen and stomach to stop diarrhea), and is commonly used in the treatment of pediatric chancre (a kind of chronic disease of children, which manifests as emaciation, dietary abnormality, abdominal distension, and thinning and yellowing of hair), enuresis, accumulation of food stagnation, distension of the epigastric region, frequent urination, and bedwetting incontinence, etc. The adverse effects of Choneijin San are not known. Adverse effects of Chicken Neijin San is not clear, need to pay attention to the weakness of the spleen and stomach without accumulation and stagnation of people with caution, should not be taken for a long time in large quantities. If there is a need for medication, it should be used correctly under the guidance of a doctor. Do not blindly use on your own, so as not to cause adverse effects on the body.