Valium, commonly known by its generic name diazepam, is a benzodiazepine medicine. Buy Valium Online; it enhances the effects of GABA (gamma-aminobutyric acid), a neurotransmitter in the brain. GABA is a neurotransmitter that inhibits nerve cell activity in the brain. Valium binds to certain brain receptors and increases GABA levels, resulting in an increase in soothing and relaxing effects. As a result, it causes drowsiness, lethargy, and a sense of relaxation from anxiety, convulsions, and muscle spasms.