Xanax (alprazolam) is a benzodiazepine medication used to treat anxiety and panic disorders. Includes side effects, interactions and safety information. 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). Alprazolam is used to treat anxiety and panic disorders. Learn how it works, common side effects, dosing, warnings, and safety tips. Alprazolam generic tablets are indicated for the management of anxiety disorder. Learn about side effects, drug interactions, dosages, warnings, and more. Get the facts on alprazolam’s dosages. You can also learn how to take the drug, which forms it comes in, and more. Overview: Alprazolam is a benzodiazepine medicine used to treat anxiety and panic disorder. It works by calming activity in the brain, which helps ease worry and promote relaxation. People take. Xanax (alprazolam) is a medication that treats anxiety. It calms down your nervous system. 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. alprazolam, drug used in the treatment of anxiety disorders and panic disorder. Alprazolam is classified as a benzodiazepine (a drug that produces a calming, sedative effect) and is marketed under the brand name Xanax by Pfizer, Inc. Alprazolam is taken orally, and is absorbed well – 80% of alprazolam binds to proteins in the serum (the majority binding to albumin). The concentration of alprazolam peaks after one to two hours.