Drug interactions
Dexamethasone-tobramycin + Isradipine
Severity: Minor
Dexamethasone-tobramycin and Isradipine: 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 CYP3A4 inducer and may lower isradipine concentrations, weakening blood pressure control. This is only plausible with systemic corticosteroid exposure and is not expected with topical dexamethasone-tobramycin.
What this interaction means in plain words
Dexamethasone-tobramycin and Isradipine have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Why it happens
Dexamethasone induces CYP3A4, increasing isradipine metabolism.
What to do
With systemic dexamethasone, monitor blood pressure and adjust isradipine dose if control worsens.
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
Frequently asked questions
Can I take Dexamethasone-tobramycin with Isradipine?
MediHelp rates the interaction as minor. Dexamethasone-tobramycin and Isradipine 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 CYP3A4 inducer and may lower isradipine concentrations, weakening blood pressure control. This is only plausible with systemic corticosteroid exposure and is not expected with topical dexamethasone-tobramycin.
How serious is the interaction between Dexamethasone-tobramycin and Isradipine?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: With systemic dexamethasone, monitor blood pressure and adjust isradipine dose if control worsens.
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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