Diazepam Oral: Dosing, Duration, and Precautions
Diazepam guidance for short-term severe anxiety, insomnia, and agitation, with dependence and sedation precautions.
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Source reviewed
February 2024
Guide category
Oral drugs
Safety boundary
Prescription medicine information for clinician-guided use.
Kenza Health Hub presents this medicine page as structured health education. Check dose, route, interactions, pregnancy or breast-feeding considerations, and local protocol with a qualified clinician or pharmacist. Read our medical editorial policy.
Therapeutic action
- Anxiolytic.
- Sedative.
- Antiseizure (anticonvulsant).
- Muscle relaxant.
Indications
Do not exceed the recommended duration of treatment because of the risk of dependence and tolerance.
- Severe anxiety, insomnia, and agitation.
Forms and strengths
- 2 mg and 5 mg tablets.
Dose and duration
Anxiety
- Adult: 2.5 to 5 mg 2 times daily for 2 to 3 weeks maximum, reducing the dose by half during the last days before stopping treatment.
Insomnia
- Adult: 2 to 5 mg once daily at bedtime for 7 days maximum.
Agitation
- Adult: 10 mg single dose.
Contra-indications, adverse effects, precautions
- Do not administer to patients with severe respiratory insufficiency, severe hepatic impairment, or acute alcohol intoxication.
- Administer with caution to older patients and patients with renal or hepatic impairment by reducing the dose by half.
- Administer with caution to patients with a history of drug or substance abuse or mental health disorders.
- May cause hypotension, muscle weakness, ataxia, hypotonia, drowsiness, lethargy, confusion, impaired concentration, memory loss, and hyperactive or aggressive behaviour.
- May cause withdrawal syndrome or rebound effect if prolonged treatment is discontinued abruptly.
- May cause respiratory depression and coma in overdose.
- Avoid or monitor combinations with alcohol-containing drugs, opioid analgesics, antipsychotics, first-generation antihistamines, antidepressants, and other antiseizure medications because of increased sedation.
- Enzyme inducers can reduce diazepam effect, while omeprazole, macrolides, ritonavir, isoniazid, fluconazole, and itraconazole can increase toxicity.
- Pregnancy and breast-feeding: avoid.
Source
MSF Essential drugs practical guidelines (January 2026)
This page combines source-derived medicine reference sections with Kenza editorial context, while leaving out the Storage and Remarks sections from the source batch.
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