Valium is used to heal anxiety-concern disorders, alcohol withdrawal symptoms, or muscle spasms. Valium is sometimes used with other medicines to treat seizures. It may be used for purposes not listed in this medication guide. Valium (diazepam) is a benzodiazepine (ben-zoe-dye-eh-peen).It is that diazepam enhances the activity of certain neurotransmitters in the brain.