Isoniazid
Indications
- Tuberculosis, in combination with other drugs (standard unsupervised 6-month treatment)
- Tuberculosis, in combination with other drugs (intermittent supervised 6-month treatment) (under expert supervision)
- Prevention of tuberculosis in susceptible close contacts or those who have become tuberculin positive
Drug Interactions
21 drug interactions identified for Isoniazid. Check the full interaction details, severity ratings, and clinical recommendations in the MedNext app.
Check Interactions in AppSafety Information
Cautions
Acute porphyrias ; alcohol dependence; diabetes mellitus; epilepsy; history of psychosis; HIV infection; malnutrition; slow acetylator status (increased risk of side-effects) Cautions, further informa...
Side Effects
General side-effects: Uncommon Hepatic disorders Rare or very rare Severe cutaneous adverse reactions (SCARs) Frequency not known Agranulocytosis; aplastic anaemia; fever; gynaecomastia; haemolytic an...
Full safety information, contraindications, and dosing available in the MedNext app.
Brand Names
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Source: MedNext Audited Proprietary Dataset
Last reviewed: 2026
Medical Disclaimer: This information is for educational purposes only and is not a substitute for professional medical advice. Always consult a qualified healthcare professional before making clinical decisions. Verify all drug information with current clinical guidelines.
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