22 IU natural Vit E (22 IU x 0.67 = 15 mg), or 33 IU synthetic Vit E (33 IU x 0.45 = 15 mg). Vit E alternate names: Alpha Tocopherol; D-Tocopherol; DL-Tocopherol; DL-Alpha-Tocopherol; Tocopheryl Succinate; Tocopheryl Acetate; D-Alpha-Tocopherol; D-Delta-Tocopherol; D-Beta- ...