Colecalciferol

Colecalciferol, also known as vitamin D3, is a fat-soluble vitamin that plays a crucial role in calcium absorption and bone health. It is produced in the skin when exposed to ultraviolet B (UVB) radiation from sunlight. Dietary sources of colecalciferol include fatty fish, fish liver oils, and fortified foods such as milk and cereals.

The primary function of colecalciferol in the body is to increase the absorption of calcium and phosphorus from the intestines. This is essential for maintaining healthy bones and teeth, and for preventing conditions like rickets in children and osteomalacia in adults. Colecalciferol also contributes to proper immune function and may play a role in muscle strength and cellular growth.

Deficiency in colecalciferol can lead to various health problems. Insufficient exposure to sunlight, inadequate dietary intake, and certain medical conditions can impair its production or absorption. Symptoms of deficiency can include bone pain, muscle weakness, fatigue, and an increased risk of fractures. Severe deficiency can result in rickets and osteomalacia.

Colecalciferol is available as a dietary supplement and is often prescribed to treat or prevent vitamin D deficiency. It is also used in combination with calcium to manage osteoporosis. While generally safe, excessive intake of colecalciferol can lead to hypercalcemia, a condition characterized by abnormally high calcium levels in the blood, which can have serious health consequences.