​​Valium is a prescription medication used to treat anxiety, muscle spasms, and alcohol withdrawal symptoms, as well as as a sedative before surgery or to treat seizures. Valium can be taken alone or in combination with other treatments. Valium is a component of the Antianxiety Agents, Anxiolytics, Benzodiazepines, Skeletal Muscle Relaxants, and Anticonvulsants, Benzodiazepine class of medications.