Drug interactions
Saquinavir + Tinidazole
Severity: Minor
Saquinavir and Tinidazole: 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
Saquinavir, usually boosted with ritonavir, inhibits CYP3A4 and may increase tinidazole levels. This may raise the risk of dose-related adverse effects.
What this interaction means in plain words
Saquinavir and Tinidazole 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
Saquinavir/ritonavir inhibits CYP3A4, reducing tinidazole clearance.
What to do
Dose changes are generally unnecessary for a short course. Monitor for gastrointestinal and neurological adverse effects.
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 Tinidazole
- Disulfiram + Tinidazole Contraindicated
- Ethanol + Tinidazole Major
- Fexinidazole + Tinidazole Major
- Lopinavir + Tinidazole Major
- Nilotinib + Tinidazole Major
- Ritonavir + Tinidazole Major
Frequently asked questions
Can I take Saquinavir with Tinidazole?
MediHelp rates the interaction as minor. Saquinavir and Tinidazole have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Saquinavir, usually boosted with ritonavir, inhibits CYP3A4 and may increase tinidazole levels. This may raise the risk of dose-related adverse effects.
How serious is the interaction between Saquinavir and Tinidazole?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Dose changes are generally unnecessary for a short course. Monitor for gastrointestinal and neurological adverse effects.
What other medicines interact with Tinidazole?
MediHelp also lists interactions of Tinidazole with, for example, Disulfiram, Ethanol, Fexinidazole. The full list is on the Tinidazole page.
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