Drug interactions
Amobarbital + Selpercatinib
Severity: Major
Amobarbital and Selpercatinib: 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 reduce selpercatinib exposure through CYP3A4 induction. This may reduce antitumor efficacy.
What this interaction means in plain words
Amobarbital and Selpercatinib 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; Selpercatinib belongs to Oncology.
Why it happens
CYP3A4 induction by amobarbital increases the metabolism of selpercatinib.
What to do
Avoid the combination and use a non-inducing alternative. Monitor tumor response if it cannot be avoided.
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 Selpercatinib
Frequently asked questions
Can I take Amobarbital with Selpercatinib?
MediHelp rates the interaction as major. Amobarbital and Selpercatinib 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 reduce selpercatinib exposure through CYP3A4 induction. This may reduce antitumor efficacy.
How serious is the interaction between Amobarbital and Selpercatinib?
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 the combination and use a non-inducing alternative. Monitor tumor response if it cannot be avoided.
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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