CheckVegan

Is Citrulline vegetarian?

Citrulline

Vegetarian Vegetarian
Vegan Vegan

Citrulline is a non-essential alpha-amino acid first isolated from watermelon in 1914. It is produced synthetically or via fermentation for use in cosmetics and supplements, and also occurs naturally in the human urea cycle.

Also known as L-Ornithine, N(5)-(aminocarbonyl)-
INCI name Citrulline
CAS number 372-75-8
EC number 206-759-6
CosIng ID 32863
Last reviewed 9 July 2026

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

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