Vitamin D3, D3 Ultra Drops 1200 IU, 1oz

What the brand says

Vitamin D is classified as both a hormone and a vitamin. D is manufactured during the skin's exposure to sunlight and is a critical element in the body's absorption of calcium. Natural vitamin D3 (cholecalciferol) is four times more potent than synthetic vitamin D2. Strong data indicates that elevated vitamin D intakes higher than standard recommended levels are beneficial, and when combined with the intake of calcium, have a significant impact on overall bone health. Vitamin D has also been the subject of multiple scientific inquiries on its positive effect on the immune system by promoting phagocytosis and immunomodulatory functions.