Stasu drug side effects, and the main components of the drug has a close relationship, Stasu is a compound preparation of the main ingredients are vitamin U, belladonna, aluminum hydroxide, etc.. Drugs have allergic reactions vary from person to person, mild only manifested as local skin allergies, severe anaphylactic shock. Absorbed drugs are detoxified and metabolized by the liver and excreted by the kidneys, so hepatic and renal impairment are also common side effects of drugs. Belladonna extract belongs to the acetylcholinesterase inhibitor, which has the effect of inhibiting the secretion of fluids from multiple glands in the body, such as salivary glands, sweat glands, and cells of the stomach wall, relieving smooth muscle spasms, decreasing peristalsis of the gastrointestinal tract, and relieving vagal excitation. Prolonged oral use will cause dry mouth, thirst, fatigue, dry skin, rapid heart rate, constipation and other symptoms, large doses of application can produce atropine chemical reaction, induced glaucoma or prostate hypertrophy. Aluminum hydroxide is to neutralize gastric acid, overdose will lead to increased pH in the stomach, decreased gastric digestion and absorption ability, causing bloating, nausea and other symptoms.