Drug interactions
Amobarbital + Lefamulin
Severity: Major
Amobarbital and Lefamulin: 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 may lower lefamulin concentrations by inducing CYP3A4 and P-gp. Reduced antibiotic exposure may cause treatment failure in pneumonia.
What this interaction means in plain words
Amobarbital and Lefamulin 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 belongs to Central Nervous System; Lefamulin belongs to Anti Bacterial.
Why it happens
Induction of CYP3A4 and P-glycoprotein reduces lefamulin exposure.
What to do
Avoid concurrent use unless benefit outweighs risk, and consider another antibiotic. Monitor for clinical response if combined.
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
Other interactions of Lefamulin
- Lefamulin + Methadone Contraindicated
- Lefamulin + Pimavanserin Contraindicated
- Lefamulin + Pimozide Contraindicated
- Lefamulin + Quinidine Contraindicated
- Alfuzosin + Lefamulin Major
- Amiodarone + Lefamulin Major
Frequently asked questions
Can I take Amobarbital with Lefamulin?
MediHelp rates the interaction as major. Amobarbital and Lefamulin 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 may lower lefamulin concentrations by inducing CYP3A4 and P-gp. Reduced antibiotic exposure may cause treatment failure in pneumonia.
How serious is the interaction between Amobarbital and Lefamulin?
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 concurrent use unless benefit outweighs risk, and consider another antibiotic. Monitor for clinical response if combined.
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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