|Vitamin D3 Drops with Dropper||–|
Vitamin D is a group of fat-soluble secosteroids responsible for increasing intestinal absorption of calcium, magnesium, and phosphate, and multiple other biological effects. There are 2 main forms of vitamin D; vitamin D3 (also known as cholecalciferol) and vitamin D2 (ergocalciferol). These compounds need to undergo hydroxylation in order to be biologically active in the body. Since vitamin D can be synthesized in adequate amounts by most mammals exposed to sufficient sunlight, vitamin D acts as a hormone that acts on vitamin D receptors to regulate calcium in opposition to parathyroid hormone. Vitamin D plays an essential physiological role in maintaining calcium homeostasis and metabolism. There are several different vitamin D supplements that are given to treat or to prevent osteomalacia and rickets, or to meet the daily criteria of vitamin D consumption.