Drug interactions
Dexamethasone + Lovastatin
Severity: Minor
Dexamethasone and Lovastatin: minor 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 weak to moderate CYP3A4 inducer, and prolonged use may lower lovastatin concentrations. The effect is usually small and short courses are unlikely to matter.
What this interaction means in plain words
Dexamethasone and Lovastatin have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Dexamethasone belongs to Endocrine; Lovastatin belongs to Cardiovascular.
Why it happens
Dexamethasone induces CYP3A4, modestly increasing lovastatin metabolism.
What to do
No routine action is needed for short courses; recheck lipids if long-term dexamethasone is used and adjust the statin dose if the response falls.
What to ask your pharmacist
- Is there anything I should notice while taking both?
- Do I need to tell my doctor at the next visit?
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Other interactions of Lovastatin
- Atazanavir + Lovastatin Contraindicated
- Clarithromycin + Lovastatin Contraindicated
- Cobicistat + Lovastatin Contraindicated
- Conivaptan + Lovastatin Contraindicated
- Darunavir + Lovastatin Contraindicated
- Elvitegravir / cobicistat / emtricitabine / tenofovir df + Lovastatin 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 Lovastatin?
MediHelp rates the interaction as minor. Dexamethasone and Lovastatin have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Dexamethasone is a weak to moderate CYP3A4 inducer, and prolonged use may lower lovastatin concentrations. The effect is usually small and short courses are unlikely to matter.
How serious is the interaction between Dexamethasone and Lovastatin?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: No routine action is needed for short courses; recheck lipids if long-term dexamethasone is used and adjust the statin dose if the response falls.
What other medicines interact with Lovastatin?
MediHelp also lists interactions of Lovastatin with, for example, Atazanavir, Clarithromycin, Cobicistat. The full list is on the Lovastatin page.
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