Information Reviews Ask Dr. Dan Product Description Douglas Laboratories E-400 for antioxidant protection support and protection from free radical damage. Recommended use: Take 1 softgel daily or as directed by a healthcare professional. Label Information Dairy Free Gluten Free Douglas Laboratories E-400 Facts: 1 Softgel contains: Vitamin E (as d-alpha Tocopheryl Acetate) 400 IU Other Ingredients: Water and gelatin (capsule).