HomeMedicineTocotrienols Boosting Your Brain Function As You Age Tocotrienols Boosting Your Brain Function As You Age September 22, 2023 Team ME ScholarHangout Tocotrienols are a type of vitamin E nutrient. They are found in cereal grains, such as rice bran and barley. These are chemicals in the vitamin E family. Vitamin E is a substance necessary for proper body and brain function.