CheckVegan

Is Isoniazid vegetarian?

Isoniazid

Vegetarian Vegetarian
Vegan Vegan

Isoniazid is a synthetic hydrazide compound, primarily known as an antitubercular drug, and is regulated as a restricted substance in cosmetics. It is fully synthetic and not animal-derived.

Also known as Hydrazides and their salts, isoniazid, Isonicotinic acid hydrazide
INCI name Isoniazid
CAS number 54-85-3
EC number 200-214-6
CosIng ID 28419
Last reviewed 9 July 2026

An ingredient is considered vegetarian if it avoids components derived from killing an animal.

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