Spasmolytics are supposed to be antispasmodics, commonly known as atropine, scopolamine, belladonna, and bromopamine tylenol, with varying indications. The treatment of some diseases requires long-term medication, but the condition must be clarified first, and patients are not advised to use the medication for a long time. Some of these drugs are also prescription drugs, and require medical guidance for their use. Patients can first roughly understand the drugs: 1, atropine is a prescription drug, belongs to the anticholinergic, clinical treatment of smooth muscle spasm, relieve all kinds of visceral colic, large doses can treat small blood vessel spasm, the process of medication may appear dizziness, dry mouth, rapid heart rate and other adverse reactions; 2, scopolamine is non-prescription drugs, clinical treatment for smooth muscle spasm and vascular spasm, relieve the gastrointestinal tract spasm caused by Pain, the process of using the drug may produce mild pupil dilation, rapid heartbeat, vision loss and other side effects; 3, belladonna is an over-the-counter drug, the effect is similar to atropine, and the effect is not strong, generally mainly used to relieve the spasmodic pain of the gastrointestinal tract, glaucoma patients are prohibited; 4, bromantadine is an over-the-counter drug, is an adjuvant drug for the treatment of gastrointestinal diseases, mainly used to relieve the smooth muscle spasm of the gastrointestinal tract generated by Pain.