Bone & Immune Health. Bio-Tech Pharmacal D3-50 50,000 Iu Is A Supplement Formulated With Vitamin D3 (Cholecalciferol) That May Help Support Bone And Immune Health Natural Support. Vitamin D Functions As A Hormone, A Chemical Messenger With Widespread Effects In The Human Body Allergy Friendly. D3-50 50,000 Iu Is Free Of Dairy, Egg, Fish, Gluten, Peanuts, Shellfish, Soy, Tree Nuts, Wheat, And Artificial Colors. This Product Is Halal Recommended Use. Do Not Exceed One Capsule Per Week Unless Directed By A Healthcare Professional