Drug interactions
Nafcillin + Tinidazole
Severity: Minor
Nafcillin 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
Nafcillin induces CYP3A4 and may lower concentrations of tinidazole. The reduction could compromise antimicrobial efficacy, although the clinical effect is not well characterized.
What this interaction means in plain words
Nafcillin 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
Nafcillin induces CYP3A4, which may enhance tinidazole metabolism.
What to do
Monitor clinical response to tinidazole during concurrent therapy. Consider a different regimen if the infection does not resolve.
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 Nafcillin with Tinidazole?
MediHelp rates the interaction as minor. Nafcillin 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. Nafcillin induces CYP3A4 and may lower concentrations of tinidazole. The reduction could compromise antimicrobial efficacy, although the clinical effect is not well characterized.
How serious is the interaction between Nafcillin 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: Monitor clinical response to tinidazole during concurrent therapy. Consider a different regimen if the infection does not resolve.
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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