Drug interactions
Clozapine + Dexamethasone-tobramycin
Severity: Minor
Clozapine and Dexamethasone-tobramycin: 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 may induce CYP3A4 and modestly lower clozapine levels, though CYP1A2 is the main clozapine pathway so the effect is likely small. Loss of psychiatric control is possible with prolonged systemic corticosteroid use.
What this interaction means in plain words
Clozapine and Dexamethasone-tobramycin have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Clozapine belongs to Central Nervous System; Dexamethasone-tobramycin belongs to Anti Bacterial.
Why it happens
Weak CYP3A4 induction by dexamethasone increases clozapine metabolism.
What to do
Monitor psychiatric status and clozapine levels if systemic dexamethasone is used for a prolonged period.
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 Clozapine
- Clozapine + Deferiprone Contraindicated
- Clozapine + Irinotecan Contraindicated
- Clozapine + Pimozide Contraindicated
- Clozapine + Thioridazine Contraindicated
- Acalabrutinib + Clozapine Major
- Adagrasib + Clozapine Major
Frequently asked questions
Can I take Clozapine with Dexamethasone-tobramycin?
MediHelp rates the interaction as minor. Clozapine and Dexamethasone-tobramycin 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 may induce CYP3A4 and modestly lower clozapine levels, though CYP1A2 is the main clozapine pathway so the effect is likely small. Loss of psychiatric control is possible with prolonged systemic corticosteroid use.
How serious is the interaction between Clozapine and Dexamethasone-tobramycin?
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 psychiatric status and clozapine levels if systemic dexamethasone is used for a prolonged period.
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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