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Hydroxyproline
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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