Swanson Vitamin D3 4000 IU (10 mcg) - 250 Capsules

Swanson Vitamin D3 400 IU is a dietary supplement in capsule form providing 10 µg (400 IU) of vitamin D3 per capsule, which supports immune function and bone health.

• The description claims that vitamin D contributes to the normal functioning of the immune system, the maintenance of normal bones and muscles, and the normal absorption of calcium and phosphorus.