Bob's Red Mill Gluten Free Oat Bran Cereal is a deliciously smooth, high fiber cereal milled from high protein oats. It's milled to contain a high concentration of the natural fiber found in oats. Oat bran is the outer layer of the oat grain. Oat bran is a good source of dietary fiber and iron. Studies have shown that dietary fiber, specifically the soluble fiber found in oats, can aid in the reduction of cholesterol. It is suitable for vegetarians and coeliac.