Rice Flour

Rice flour is a finely milled powder derived from ground rice grains, most commonly from white or brown rice (Oryza sativa). It is one of the most widely used excipients and filler ingredients in the dietary supplement industry, valued for its neutral flavor, hypoallergenic profile, and excellent flow properties that help manufacturers encapsulate active ingredients consistently. Shoppers frequently encounter it listed on supplement labels as a filler, anti-caking agent, or capsule bulking agent rather than as a primary active ingredient. People searching for rice flour in a supplement context are often doing so to understand what else is in their capsule beyond the featured active ingredients. Because it is naturally gluten-free, rice flour is a preferred filler for brands marketing to consumers with gluten sensitivities or celiac disease, making it a meaningful label detail for that audience. It is also used in food products, protein powders, and meal replacement formulas as a carbohydrate source and texture modifier. When comparing products, buyers should note whether rice flour appears early or late in the ingredient list — a late appearance typically signals a small filler quantity, while an early appearance may indicate it contributes meaningfully to the carbohydrate content. Those monitoring blood sugar or following low-glycemic diets may want to assess the total rice flour quantity, as white rice flour has a moderate-to-high glycemic index. Brown rice flour variants retain more fiber and micronutrients and may be preferable for nutrition-forward formulas.