Drug interactions
Dexamethasone-tobramycin + Nimodipine
Severity: Minor
Dexamethasone-tobramycin and Nimodipine: 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 can induce CYP3A4, which is the main route of nimodipine metabolism, so nimodipine exposure may fall. This is more plausible with systemic dexamethasone than with topical use and could reduce the cerebrovascular benefit.
What this interaction means in plain words
Dexamethasone-tobramycin and Nimodipine 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-tobramycin belongs to Anti Bacterial; Nimodipine belongs to Cardiovascular.
Why it happens
CYP3A4 induction by dexamethasone increases first-pass and systemic clearance of nimodipine.
What to do
Monitor blood pressure and clinical response when systemic dexamethasone is co-administered, and adjust nimodipine if the effect is reduced.
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 Dexamethasone-tobramycin
Other interactions of Nimodipine
- Apalutamide + Nimodipine Major
- Carbamazepine + Nimodipine Major
- Ceritinib + Nimodipine Major
- Clarithromycin + Nimodipine Major
- Cobicistat + Nimodipine Major
- Darunavir + Nimodipine Major
Frequently asked questions
Can I take Dexamethasone-tobramycin with Nimodipine?
MediHelp rates the interaction as minor. Dexamethasone-tobramycin and Nimodipine 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 can induce CYP3A4, which is the main route of nimodipine metabolism, so nimodipine exposure may fall. This is more plausible with systemic dexamethasone than with topical use and could reduce the cerebrovascular benefit.
How serious is the interaction between Dexamethasone-tobramycin and Nimodipine?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor blood pressure and clinical response when systemic dexamethasone is co-administered, and adjust nimodipine if the effect is reduced.
What other medicines interact with Dexamethasone-tobramycin?
MediHelp also lists interactions of Dexamethasone-tobramycin with, for example, Capreomycin, Carboplatin, Ciprofloxacin. The full list is on the Dexamethasone-tobramycin page.
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