Valium, the brand name for diazepam, is a prescription medication that belongs to the benzodiazepine class of drugs. It is commonly used to treat a variety of conditions, including anxiety, muscle spasms, seizures, and symptoms of alcohol withdrawal. Valium Helps relieve symptoms of anxiety and panic attacks. It Used to manage muscle spasms or spasticity. Diazepam enhances the effects of GABA (gamma-aminobutyric acid), a neurotransmitter that has inhibitory effects on the brain, resulting in a calming effect.