Belladonna Tablet is a dual-cross drug (i.e., it is a prescription drug as well as an OTC Class A drug), and this drug is available in pharmacies. Belladonna Tablet is an anticholinergic drug that can relieve smooth muscle spasm and inhibit glandular secretion, and it is mainly used in the clinic for the treatment of gastric ulcer, duodenal ulcer, renal colic, biliary colic and so on, and its main ingredient is belladonna extract. The more common adverse reactions to this drug include dryness of the nose, throat and skin, dry mouth, thirst, low perspiration, poor urination, etc. Rarer cases include increased intraocular pressure, double eye pain, allergic rash and herpes. Belladonna tablets are prohibited for those who are allergic to belladonna tablets, patients with tachycardia, prostate disease, glaucoma, and for nursing mothers. Take belladonna tablets should follow the doctor’s advice, do not take it blindly on your own, so as not to cause adverse consequences.