Vitamin D3 seemed more effective than D2 at raising ... Patients should have a 25-OH vitamin D test yearly from September through March, around the same time they get their fasting lipid level.

In the liver, vitamin D3 is hydroxylated to form 25-hydroxyvitamin D3 (25(OH)D3), the main circulating form of vitamin D3. This compound is then further hydroxylated in the kidneys to form 1,25 ...

For example, vitamin D3 is more effective than vitamin D2 at boosting blood levels, but both are found in supplements. Dosage, form, and added ingredients can vary widely among products.

Sun exposure can help most people boost their vitamin D levels. Your body makes vitamin D when cells in your skin come into ...

and vitamin D3, called cholecalciferol. Both D2 and D3 are converted into 25 hydroxyvitamin D in your body but your body more effectively converts D3. This means you'll get more usable/bioactive ...

Effect of calcitriol (vitamin 1, 25-(OH)D3 = vitamin D) on the the functional balance of mutually antagonistic Th1, Th2 and Treg cells, dendritic cells and production of several cytokines.

Breastfed infants and children with certain medical conditions are also susceptible to vitamin D deficiency. If a healthcare professional has recommended a vitamin D supplement for calcium ...

Vitamin D supplementation (D3 or 25[OH]D) was likely not significantly associated with protection against acute respiratory infection.

Vitamin D3, a form of vitamin D ... spend about 15 minutes in the sun at a time if you have light skin and about 25 minutes if you have darker skin. Important: Sunscreen, higher latitudes ...