Since 1947 Cholecalciferol Maintains Healthy Bones & Teeth Supports A Healthy Immune System Kosher Parve Dietary Supplement Solgar's KOF-K Certification #K-1250 Certified Gluten FreeVitamin D is required to promote calcium absorption, which helps to maintain healthy bones and teeth. Vitamin D also supports a healthy immune system and may support neuromuscular function. This formulation provides Vitamin D3 for daily supplementation.