Hi, Valium contains diazepam which belongs to the group of medications known as benzodiazepines is used to treat anxiety, alcohol withdrawal, seizures etc. It is also used to relieve muscle spasms and to provide sedation before medical procedure. It works by calming the brain and nerves. Side effects of Valium are drowsiness, tiredness, fatigue, headache, tremor, dizziness, dry mouth, nausea, vomiting, constipation, symptoms of allergic reactions like itching and rashes in any part of the body such as vagina, thigh or public area, swelling of lips, tongue or throat, breathing difficulties etc. If you experience such type of side effects, you should contact your doctor for medical help. Take care. Hope I have answered your question. Let me know if I can assist you further. Regards, Dr. Zubayer Alam, General And Family Physician