Diazepam is available in several oral dosage forms, including a tablet, solution, and concentrated oral solution (Diazepam Intensol). The typical diazepam dosage for adults ranges from 2 mg to 10 mg by mouth 2 to 4 times per day. Lower dosages are recommended for children and older adults. For adult patients with anxiety disorders, the FDA-approved maximum daily dose of diazepam is 40 mg per day, administered as 2-10 mg taken 2 to 4 times daily, though most patients respond adequately to lower doses of 4-40 mg daily. 1 Learn about Valium’s (diazepam) dosage, uses, and potential side effects. Find out how to take it safely and avoid risks such as overdose and addiction. Diazepam is used to relieve symptoms of anxiety and alcohol withdrawal. This medicine may also be used to treat certain seizure disorders and help relax muscles or relieve muscle spasm. Diazepam is used to treat anxiety, symptoms of acute alcohol withdrawal, and more. Find out what the recommended dosages are, how to take the drug, and more. The maximum daily dose of oral diazepam (Valium) is 40 mg per day for adults, though this should be limited to the smallest effective amount, particularly in elderly patients. 1 Medscape - Indication-specific dosing for Valium, Valtoco (diazepam), frequency-based adverse effects, comprehensive interactions, contraindications, pregnancy & lactation schedules, and cost. Detailed Diazepam dosage information for adults, the elderly and children. Includes dosages for Anxiety, Muscle Spasm, Seizures and more; plus renal, liver and dialysis adjustments. Detailed dosage guidelines and administration information for Valium (diazepam). Includes dose adjustments, warnings and precautions. Learn more about diazepam dosage, including available strengths, form, and how it's taken.