Is Hydrolyzed Vegetable Protein (HVP) Gluten-Free?
Hydrolyzed vegetable protein depends on the source: soy and corn versions are gluten-free, but hydrolyzed WHEAT protein contains gluten and must be named on US labels.
Hydrolyzed vegetable protein (HVP) is a savory flavor booster made by breaking a plant protein into amino acids. The source plant determines the gluten answer: soy or corn HVP is gluten-free, while hydrolyzed wheat protein (HWP) retains gluten peptides and is not safe.
Unlike glucose syrup or maltodextrin, hydrolysis of wheat protein does NOT reliably remove gluten — hydrolyzed wheat protein is specifically flagged by celiac organizations, and "fermented or hydrolyzed" gluten ingredients have their own stricter FDA rule (21 CFR 101.91(c)) because standard tests under-detect them.
On US labels, a wheat source must be declared ("hydrolyzed wheat protein"), so an HVP that only says "hydrolyzed soy protein" or "hydrolyzed corn protein" is safe. It is most common in soups, bouillon, seasoning mixes, and processed meats.
How to check the label
- Safe: "hydrolyzed soy protein," "hydrolyzed corn protein"
- Not safe: "hydrolyzed wheat protein" — also watch for it in cosmetics/shampoo if you have dermatitis herpetiformis
- Vague "hydrolyzed vegetable protein" on imported products: verify or choose certified GF
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Sources & References
Reviewed July 2026. Ingredient sourcing and labeling rules can change and vary by country — confirm on the current label or with the manufacturer.