CheckVegan

Is Metformin vegan?

Metformin

Vegan Vegan
Vegetarian Vegetarian

Metformin is a synthetic biguanide drug widely used as a first-line treatment for type 2 diabetes. It is a fully synthetic small-molecule medication not derived from animals.

Also known as metformin
INCI name Metformin
CAS number 657-24-9
EC number 211-517-8
CosIng ID 28366
Last reviewed 9 July 2026

An ingredient is considered vegan if it contains no animal-derived components at any point in its production.

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