Tri-En-All 400 contains 400 I.U. of 100% natural-source, unesterified vitamin E (d-alpha-tocopherol), as well as a guaranteed minimum of the d-beta, d-gamma and d-delta tocopherols, which is unique among most mixed tocopherol products available. In addition, 25 mg of palm derived mixed tocotrienols are included in Tri-En-All 400 for heart health benefits.