Rice protein
What the research shows
Conflicting
studies in people disagree*
*Allergies present
A vegan protein made from rice.
It is used as an alternative to whey and soy protein.1
What research says
Studies in people
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Benefit
Long-term use in infants2
Rice protein formulas seem to help babies with milk allergy grow, but long-term effects are not yet known.
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Open question
Infant growth and tolerance3
Infants with cow's milk allergy grew normally on rice protein formula, with tolerance building at a similar pace.
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Concern
Infant gut reaction4
In infants, rice protein caused vomiting and diarrhea, and doctors needed more than one hospital visit to spot it.
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Open question
Infant growth and nutrition6
Babies fed rice protein formula grew normally, though their blood amino acid levels differed slightly from babies fed milk formula.
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Open question
Infant milk allergy tolerance7
Infants with cow's milk allergy tolerated a rice protein formula and gained weight well.
Allergies and intolerances
These are about people with an allergy, an intolerance or coeliac disease. The signal is about the ingredient itself, and these are about the person eating it, so the signal does not count them.
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Grain allergy cross-reactions9
Rice protein 16KD may be one reason people allergic to rice also react to millet and other grains.
How it’s made and used
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How much the body absorbs5
In people, eating xanthohumol with rice protein led to more of it getting into the blood.
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Meatball texture and taste8
Replacing some pork with rice protein made meatballs softer and less stable, though a small amount kept tasters happy.
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Extrusion and amino acid balance10
In lab studies, rice protein kept a more balanced amino acid profile after extrusion than pea protein did.
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Starch digestion11
In lab studies, adding rice protein to extruded rice starch slowed how quickly the starch was broken down.
The signal at the top counts the findings in people and in animal and lab studies. A concern in studies of people outranks animal and lab studies, and “No concerns” needs at least one finding in people. When most findings in people point one way, the page leans that way (“Mostly”), and every finding is still shown. Findings whose study type is not stated are shown but not counted. This page is a reference, not medical advice. It describes what regulators and published research say. Talk to a doctor or dietitian about your own diet.
Products
The 6 most-scanned of 1,266 products on Open Food Facts that list rice protein.
- Beyond Burger Beyond Meat · 226 g 3 additives
- Beyond Burger Beyond Meat · 226 g (2x113 g) 3 additives
- Perfect Bar Perfect Bar · 71 g 0 additives
- Plant Based Protein Bar Trubar · 50gr bars 1 additive
- LEMON & PISTACHIO PROTEIN BALLS Alesto 0 additives
- Dark Chocolate Chip Peanut Butter Perfect Bar 2 additives
References
- 1Rice protein. Wikipedia. Accessed September 26, 2026. CC BY-SA 4.0.
- 2Dupont C, Bocquet A, Tomé D, et al. Hydrolyzed Rice Protein-Based Formulas, a Vegetal Alternative in Cow's Milk Allergy. Nutrients. 2020;12(9). doi:10.3390/nu12092654
- 3Lemoine A, Nieto-García A, Nieto-Cid M, et al. Growth, Safety and Tolerance in Infants Fed Rice Protein Hydrolysate Formula: The GRITO Randomised Controlled Trial. Nutrients. 2024;17(1). doi:10.3390/nu17010162
- 4Hojsak I, Kljaić-Turkalj M, Misak Z, Kolacek S. Rice protein-induced enterocolitis syndrome. Clin Nutr. 2006;25(3):533-6. doi:10.1016/j.clnu.2005.12.005
- 5O'Connor A, Konda V, Reed RL, Christensen JM, Stevens JF, Contractor N. Rice Protein Matrix Enhances Circulating Levels of Xanthohumol Following Acute Oral Intake of Spent Hops in Humans. Mol Nutr Food Res. 2018;62(6):e1700692. doi:10.1002/mnfr.201700692
- 6Lasekan JB, Koo WW, Walters J, Neylan M, Luebbers S. Growth, tolerance and biochemical measures in healthy infants fed a partially hydrolyzed rice protein-based formula: a randomized, blinded, prospective trial. J Am Coll Nutr. 2006;25(1):12-9. doi:10.1080/07315724.2006.10719509
- 7Vandenplas Y, De Greef E, Hauser B. Safety and tolerance of a new extensively hydrolyzed rice protein-based formula in the management of infants with cow's milk protein allergy. Eur J Pediatr. 2014;173(9):1209-16. doi:10.1007/s00431-014-2308-4
- 8Hsiao JT, Chang TW, Chen LY, Sheu F. Evaluation and reinforcement of the physicochemical properties of hybrid meatball kung-wan partially replaced with rice protein. Meat Sci. 2025;227:109853. doi:10.1016/j.meatsci.2025.109853
- 9Urisu A, Yamada K, Masuda S, et al. 16-kilodalton rice protein is one of the major allergens in rice grain extract and responsible for cross-allergenicity between cereal grains in the Poaceae family. Int Arch Allergy Appl Immunol. 1991;96(3):244-52. doi:10.1159/000235502
- 10Peñaranda I, Garrido MD, García-Segovia P, Martínez-Monzó J, Igual M. Effect of protein texturization on amino acids and protein in vitro bioaccessibility of pea and rice protein. Food Funct. 2025;16(5):1820-1829. doi:10.1039/d4fo04829f
- 11Bao H, Liu Q, Yang Y, et al. Effects of rice protein, soy isolate protein, and whey concentrate protein on the digestibility and physicochemical properties of extruded rice starch. J Food Sci. 2023;88(3):1159-1171. doi:10.1111/1750-3841.16458