Drug interactions
Amobarbital + Diazepam intranasal
Severity: Major
Amobarbital and Diazepam intranasal: 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
Amobarbital adds to the CNS and respiratory depression of diazepam. As an enzyme inducer, it may also lower diazepam exposure and reduce its effect, which matters when intranasal diazepam is used for seizure rescue.
What this interaction means in plain words
Amobarbital and Diazepam intranasal 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 GABA-A mediated CNS depression, plus CYP3A4 induction by the barbiturate increasing diazepam clearance.
What to do
Monitor for oversedation and respiratory depression and for inadequate seizure control; adjust diazepam dosing according to response. Avoid other CNS depressants where possible.
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 Amobarbital
- Amobarbital + Calcium / magnesium / potassium / sodium oxybates Contraindicated
- Amobarbital + Doravirine Contraindicated
- Amobarbital + Elbasvir / grazoprevir Contraindicated
- Amobarbital + Isavuconazonium Contraindicated
- Amobarbital + Isocarboxazid Contraindicated
- Amobarbital + Lonafarnib Contraindicated
Frequently asked questions
Can I take Amobarbital with Diazepam intranasal?
MediHelp rates the interaction as major. Amobarbital and Diazepam intranasal 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. Amobarbital adds to the CNS and respiratory depression of diazepam. As an enzyme inducer, it may also lower diazepam exposure and reduce its effect, which matters when intranasal diazepam is used for seizure rescue.
How serious is the interaction between Amobarbital and Diazepam intranasal?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor for oversedation and respiratory depression and for inadequate seizure control; adjust diazepam dosing according to response. Avoid other CNS depressants where possible.
What other medicines interact with Amobarbital?
MediHelp also lists interactions of Amobarbital with, for example, Calcium / magnesium / potassium / sodium oxybates, Doravirine, Elbasvir / grazoprevir. The full list is on the Amobarbital page.
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