Valium 10mg (MD) contains diazepam, a prescription benzodiazepine medicine manufactured by Martin Dow. It is used under medical supervision for conditions such as anxiety, muscle spasms, and certain seizure disorders. Diazepam has calming, sedative, muscle-relaxant, and anticonvulsant effects. It may cause drowsiness and can lead to dependence with prolonged or inappropriate use, so it should be taken only as prescribed by a qualified healthcare professional.