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Medicines isoniazidQuestion & answer

isoniazid · Medicine question

When should isoniazid tablets be taken in relation to meals?

iatroX medicinesPublished 8 November 2026

The answer

Answer

Isoniazid tablets should preferably be taken on an empty stomach, at least 30 minutes before a meal or 2 hours after a meal.

Sources for this answer

Isoniazid Tablets BP 50mgRPH Pharmaceuticals AB · emc · SmPC §4.2 Posology and method of administration · Version 6Document updated 29 August 2025

Sources checked 8 November 2026

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isoniazid

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