Drug interactions
Dexamethasone + Ranolazine
Severity: Moderate
Dexamethasone and Ranolazine: moderate 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
Dexamethasone is a CYP3A4 inducer and may lower ranolazine concentrations. The effect is usually modest with short courses, but may reduce antianginal efficacy with prolonged use.
What this interaction means in plain words
Dexamethasone and Ranolazine can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Dexamethasone belongs to Endocrine; Ranolazine belongs to Cardiovascular.
Why it happens
CYP3A4 induction increasing ranolazine metabolism.
What to do
Monitor angina control during extended dexamethasone therapy and consider a ranolazine dose adjustment or alternative if efficacy falls.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
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Other interactions of Ranolazine
- Adagrasib + Ranolazine Contraindicated
- Amobarbital + Ranolazine Contraindicated
- Apalutamide + Ranolazine Contraindicated
- Butabarbital + Ranolazine Contraindicated
- Carbamazepine + Ranolazine Contraindicated
- Clarithromycin + Ranolazine Contraindicated
Other interactions of Dexamethasone
- Bcg vaccine live + Dexamethasone Contraindicated
- Dexamethasone + Mifepristone Contraindicated
- Dexamethasone + Rilpivirine Contraindicated
- Dexamethasone + Smallpox vaccine live Contraindicated
- Dexamethasone + Varicella virus vaccine live Contraindicated
- Dexamethasone + Yellow fever vaccine Contraindicated
Frequently asked questions
Can I take Dexamethasone with Ranolazine?
MediHelp rates the interaction as moderate. Dexamethasone and Ranolazine can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Dexamethasone is a CYP3A4 inducer and may lower ranolazine concentrations. The effect is usually modest with short courses, but may reduce antianginal efficacy with prolonged use.
How serious is the interaction between Dexamethasone and Ranolazine?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor angina control during extended dexamethasone therapy and consider a ranolazine dose adjustment or alternative if efficacy falls.
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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