LifeSource Foods Oat Fiber 500 (3 LB) All-Natural, Gluten-Free, Zero-Carb Fiber Source for Low-Carb Baking;

Ingredients: 100% Oat Fiber. Note: LifeSource Foods Oat Fiber 500 is gluten free, although it is made in a plant that processes wheat, soy, eggs, and milk.