Drug interactions
Butabarbital + Ranolazine
Severity: Contraindicated
Butabarbital and Ranolazine: contraindicated 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 induce CYP3A4 and can substantially lower ranolazine concentrations, causing loss of antianginal efficacy. Ranolazine labeling contraindicates use with CYP3A inducers.
What this interaction means in plain words
Butabarbital and Ranolazine are not normally used together. Taking them at the same time is expected to cause harm or make one of them unsafe, so a different medicine is usually chosen for one of the two.
Why it happens
Induction of CYP3A4 increases ranolazine metabolism.
What to do
Do not use together; choose a non-inducing sedative or another antianginal. If an inducer is stopped, expect ranolazine exposure to recover over weeks.
What to ask your pharmacist
- Is there an alternative to one of these two medicines for me?
- If both are essential, who is monitoring me and how often?
- Which symptoms mean I should stop and seek help straight away?
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Other interactions of Ranolazine
- Adagrasib + Ranolazine Contraindicated
- Amobarbital + Ranolazine Contraindicated
- Apalutamide + Ranolazine Contraindicated
- Carbamazepine + Ranolazine Contraindicated
- Clarithromycin + Ranolazine Contraindicated
- Cobicistat + Ranolazine Contraindicated
Frequently asked questions
Can I take Butabarbital with Ranolazine?
MediHelp rates the interaction as contraindicated. Butabarbital and Ranolazine are not normally used together. Taking them at the same time is expected to cause harm or make one of them unsafe, so a different medicine is usually chosen for one of the two. Barbiturates induce CYP3A4 and can substantially lower ranolazine concentrations, causing loss of antianginal efficacy. Ranolazine labeling contraindicates use with CYP3A inducers.
How serious is the interaction between Butabarbital and Ranolazine?
MediHelp rates it contraindicated, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Do not use together; choose a non-inducing sedative or another antianginal. If an inducer is stopped, expect ranolazine exposure to recover over weeks.
What other medicines interact with Ranolazine?
MediHelp also lists interactions of Ranolazine with, for example, Adagrasib, Amobarbital, Apalutamide. The full list is on the Ranolazine page.
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