Major Vitamin Supplement Vitamin D3 400 IU Strength Tablet 100 per Bottle - BottleVitamin Supplement Major Vitamin D3 400 IU Strength Tablet 100 per Bottle Vitamin D 3 forms in the skin when the body is exposed to sunlight: Because of this, it has been called the "sunshine vitamin." Vitamin D can be obtained from eating salmon, sardines, herring, canned tuna and eggs; many foods are fortified with vitamin D, e. g. cow's milk and orange juice. If you're not getting enough vitamin D because you don't spend enough time outdoors and