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Lysine Hcl

Low concern

Lysine HCl is a dietary source of an essential amino acid generally recognized as safe. It is widely used to enhance protein quality in foods and feed.

Found in

119 products

What it is

L-Lysine monohydrochloride, the hydrochloride salt form of the essential amino acid lysine.

Nutritional supplement and fortificant used to enrich protein quality of cereals and processed foods.

Why it's flagged

High-dose supplements may cause GI upset

What regulators actually say

"Amino acids listed in paragraph (b) of this section may be added to foods... L-Lysine monohydrochloride"

21 CFR 172.320 — ecfr.gov

"Lysine is an essential amino acid required for normal growth and tissue maintenance."

NIH Office of Dietary Supplements — ods.od.nih.gov

Regulatory status

United States — FDA

GRAS as nutrient (21 CFR 172.320 amino acids)

European Union — EFSA

Authorized as feed additive and food fortificant

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