Valium is a brand name for the medication diazepam, which belongs to the benzodiazepine class of drugs. It is primarily prescribed to treat anxiety disorders, muscle spasms, seizures, and as a sedative before medical procedures. Valium is often prescribed for generalized anxiety disorder (GAD), panic disorder, and social anxiety disorder. Valium works by enhancing the effects of gamma-aminobutyric acid (GABA), a neurotransmitter that inhibits brain activity, leading to relaxation and sedation.