Product specifications:(Food grade) Vitamin D3 oil: 1.0MIU；(Food grade) Vitamin D3 powder (water soluble): 100；(Feed grade) Vitamin D3 powder: 500；(Feed grade) Vitamin D3 powder (water soluble): 500；(Feed grade) Vitamin D3 oil: 1.0MIU 4.0MIU 5.0MIU.

Vitamin D3, also known as cholecalciferol, is typically a white to off-white crystalline powder with a slight yellow tint. It is odorless and has a solid, granular form. This essential nutrient plays a crucial role in maintaining bone health by regulating calcium and phosphorus levels in the body, supporting immune function, and contributing to overall well-being.
Functions and Applications:
1.Sunlight Synthesis: The primary source of vitamin D3 for most people is synthesis in the skin upon exposure to sunlight. When the skin is exposed to UVB radiation from sunlight, a precursor molecule in the skin is converted into vitamin D3. This pre-vitamin D3 then undergoes further conversion in the liver and kidneys to become the active form of vitamin D, known as calcitriol.
2.Dietary Sources: While sunlight exposure is the primary source of vitamin D3, it is also found in certain foods, albeit in relatively small amounts. Some dietary sources of vitamin D3 include fatty fish (such as salmon, mackerel, and tuna), egg yolks, liver, and fortified foods like milk, orange juice, and breakfast cereals.
3.Calcium and Phosphorus Absorption: Vitamin D3 plays a crucial role in regulating calcium and phosphorus levels in the body, which are essential for bone health. It enhances the absorption of calcium and phosphorus from the intestine, helping to maintain adequate levels of these minerals in the blood for bone mineralization and remodeling.
4.Bone Health: Adequate vitamin D3 levels are essential for maintaining strong and healthy bones. Vitamin D3 deficiency can lead to conditions like rickets in children and osteomalacia in adults, which are characterized by weakened bones and an increased risk of fractures.
5.Muscle Function: Vitamin D3 is important for muscle health and function. It may help improve muscle strength and balance, reducing the risk of falls and fractures, particularly in older adults.
6.Immune Regulation: Vitamin D3 plays a role in modulating the immune system and may help reduce the risk of autoimmune diseases and infections. It has been implicated in regulating the function of immune cells and reducing inflammation.
7.Cardiovascular Health: Some research suggests that adequate vitamin D3 levels may be associated with a reduced risk of cardiovascular disease, including hypertension, heart attack, and stroke. However, more research is needed to fully understand the role of vitamin D3 in cardiovascular health.