Drug reference
isoniazid
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.
Drug class
Anti Bacterial (Anti TB)
Mechanism of action
Unknown: prob. inhibits cell-wall biosynthesis by interfering with lipid and DNA synthesis (bactericidal)
Common side effects
- Vomiting
- Nausea
- Mild incr LFTs
- Peripheral neuropathy
- Loss of appetite
Known interactions (8)
- avanafil + isoniazid Moderate
- flibanserin + isoniazid Moderate
- isoniazid + ivabradine Moderate
- isoniazid + ketoconazole Moderate
- isoniazid + lovastatin Moderate
- isoniazid + lurasidone Moderate
- isoniazid + pimozide Moderate
- isoniazid + regorafenib Moderate
Related conditions
Frequently asked questions
What drug class is isoniazid?
isoniazid belongs to: Anti Bacterial.
How does isoniazid work?
Unknown: prob. inhibits cell-wall biosynthesis by interfering with lipid and DNA synthesis (bactericidal)
What are the common side effects of isoniazid?
Vomiting, Nausea, Mild incr LFTs, Peripheral neuropathy, Loss of appetite
Which drugs interact with isoniazid?
avanafil, flibanserin, ivabradine, ketoconazole, lovastatin, lurasidone, pimozide, regorafenib
Full monographs, dosing and an interaction checker in the MediHelp app
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