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Hydroxyproline

Safe

Hydroxyproline is a normal constituent of collagen and a routine component of dietary protein from meat, fish, and gelatin. It is not regulated as an additive; presence in foods reflects natural collagen content.

Found in
22 products

What it is

A non-essential amino acid produced by post-translational hydroxylation of proline; abundant in collagen.

Naturally occurring amino acid in animal-source foods, especially collagen and gelatin; sometimes used in supplements.

What regulators actually say

"Hydroxyproline is an amino acid found in collagen ... it is a major component of the collagen protein."

Regulatory status

United States — FDA

Naturally occurring amino acid; no specific regulation as additive

European Union — EFSA

Naturally occurring amino acid; no specific regulation

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