Xanax (alprazolam) is a prescription tablet for generalized anxiety disorder and panic disorder. Learn about side effects, dosage, uses, and more. Alprazolam is a benzodiazepine. Benzodiazepines belong to the group of medicines called central nervous system (CNS) depressants, which are medicines that slow down the nervous system. This medicine is available only with your doctor's prescription. This product is available in the following dosage forms: Xanax is a benzodiazepine medicine. Benzodiazepines are depressants that slow down the body’s central nervous system, according to the Drug Enforcement Administration. Xanax (alprazolam) is a medication that treats anxiety. It calms down your nervous system. Find patient medical information for Alprazolam (Xanax) on WebMD including its uses, side effects and safety, interactions, pictures, warnings, and user ratings Alprazolam (Xanax, Xanax XR, Niravam) is an anti-anxiety drug that belongs to the benzodiazepine class. Common side effects are fatigue, constipation, changes in weight, and addiction (dependency). Xanax (alprazolam) is a benzodiazepine medication used to treat anxiety and panic disorders. Includes side effects, interactions and safety information. XANAX is approved to treat anxiety disorders, provide short-term anxiety relief, and treat panic disorder, with or without agoraphobia. Take XANAX exactly as prescribed by your doctor to avoid serious side effects that may occur like addiction, coma, or death. How Xanax affects your body can vary by your age, mental state when you take the drug, dosage, and other factors. It may have a sedative effect that can make you feel calmer. Alprazolam, sold under the brand name Xanax among others, is a fast-acting, potent tranquilizer of moderate duration within the triazolobenzodiazepine group of chemicals called benzodiazepines. [15].