Drug interactions
Clarithromycin + Tinidazole
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.
Overview
Clarithromycin, a strong CYP3A4 inhibitor, may increase tinidazole exposure, potentially raising the risk of adverse effects (e.g., GI upset, metallic taste, neuropathy, CNS effects).
Mechanism of action
Pharmacokinetic: Tinidazole is primarily metabolized by CYP3A4; clarithromycin strongly inhibits CYP3A4, reducing tinidazole metabolism.
Clinical management
If coadministered, monitor closely for tinidazole toxicity, especially with higher or prolonged tinidazole doses or in hepatic impairment; consider therapy modification if adverse effects emerge.
Drug reference
References
- Tinidazole (Tindamax) Prescribing Information – Section 7 Drug Interactions — FDA Label
- Clarithromycin (Biaxin) Prescribing Information – Drug Interactions (CYP3A4 inhibition) — FDA Label
- Tinidazole: Drug Interactions — Lexicomp
Frequently asked questions
Can I take Clarithromycin with Tinidazole?
The interaction is rated: Moderate. Clarithromycin, a strong CYP3A4 inhibitor, may increase tinidazole exposure, potentially raising the risk of adverse effects (e.g., GI upset, metallic taste, neuropathy, CNS effects).
How serious is the interaction between Clarithromycin and Tinidazole?
The interaction is rated: Moderate. Evidence level: Moderate.
How is the interaction between Clarithromycin and Tinidazole managed?
If coadministered, monitor closely for tinidazole toxicity, especially with higher or prolonged tinidazole doses or in hepatic impairment; consider therapy modification if adverse effects emerge.
Why do Clarithromycin and Tinidazole interact?
Pharmacokinetic: Tinidazole is primarily metabolized by CYP3A4; clarithromycin strongly inhibits CYP3A4, reducing tinidazole metabolism.
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