Drug interactions
Oxazepam + Pentobarbital
Severity: Major
Oxazepam and Pentobarbital: major interaction.
Last updated
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Summary
Barbiturates and benzodiazepines both depress the central nervous system, and together they can cause marked sedation, respiratory depression and hypotension. The risk is highest with higher doses, parenteral pentobarbital and in frail patients.
What this interaction means in plain words
Oxazepam and Pentobarbital can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Why it happens
Additive enhancement of GABA-A receptor activity at different binding sites.
What to do
Avoid routine co-prescription; if used, reduce doses and monitor respiratory function and sedation level. Do not combine with alcohol or opioids.
What to ask your pharmacist
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
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Other interactions of Oxazepam
- Calcium / magnesium / potassium / sodium oxybates + Oxazepam Contraindicated
- Oxazepam + Sodium oxybate Contraindicated
- Alfentanil + Oxazepam Major
- Amobarbital + Oxazepam Major
- Baclofen + Oxazepam Major
- Belladonna and opium + Oxazepam Major
Frequently asked questions
Can I take Oxazepam with Pentobarbital?
MediHelp rates the interaction as major. Oxazepam and Pentobarbital can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Barbiturates and benzodiazepines both depress the central nervous system, and together they can cause marked sedation, respiratory depression and hypotension. The risk is highest with higher doses, parenteral pentobarbital and in frail patients.
How serious is the interaction between Oxazepam and Pentobarbital?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid routine co-prescription; if used, reduce doses and monitor respiratory function and sedation level. Do not combine with alcohol or opioids.
What other medicines interact with Oxazepam?
MediHelp also lists interactions of Oxazepam with, for example, Calcium / magnesium / potassium / sodium oxybates, Sodium oxybate, Alfentanil. The full list is on the Oxazepam page.
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