Vitacost, Vitamin D3 , 25 mcg (1,000 IU), 300 Capsules

Vitacost Vitamin D3 provides 25 mcg (1,000 IU) of vitamin D3 per capsule in a 300-capsule supply. Vitamin D3, or cholecalciferol, is the form of vitamin D naturally produced by the body when skin is exposed to sunlight. This fat-soluble vitamin plays a crucial role in calcium absorption and bone mineralization. Vitamin D also supports immune function and cellular processes throughout the body. The 1,000 IU dosage is a common maintenance level for vitamin D supplementation. Since vitamin D is fat-soluble, taking it with a meal containing fat may enhance absorption.