Vitamin D supplements are commonly used to treat and prevent vitamin D deficiency, for weak and brittle bones, cavities, psoriasis, and hay fever.

Dec 10, 2025 · Learn 15 ways that vitamin D3 supports bone, immune, and heart health. Discover benefits for your skin and mood with expert insights on using D3.

Mar 21, 2025 · Vitamin D is a nutrient the body needs, along with calcium, to build bones and keep them healthy. The body can absorb calcium only if it has enough vitamin D. Calcium is a …

Dec 22, 2025 · Vitamin D is vital for bone health and immune function, yet many Americans remain deficient. According to the National Institutes of Health Office of Dietary Supplements …

Oct 25, 2024 · Vitamin D plays a key role in bone health and helps your immune system stay strong. Peart delves deeper into both of these benefits. Calcium is an essential mineral that’s …

May 20, 2013 · Vitamin D has several important functions. Perhaps the most vital are regulating the absorption of calcium and phosphorus and facilitating healthy immune system function. …

Together with calcium, vitamin D helps protect you from developing osteoporosis, a disease that thins and weakens the bones and makes them more likely to break. Your body needs vitamin …

Nov 11, 2025 · Vitamin D supplementation is used for treatment of vitamin D−deficient states in adults and children that can occur due to insufficient dietary sources, insufficient sunshine, …

Oct 30, 2025 · The benefits and uses of vitamin D3 include supporting bone and heart health. It also helps maintain your muscle strength and mental well-being.

Vitamin D supplements are available in two forms: vitamin D2 (“ergocalciferol” or pre-vitamin D) and vitamin D3 (“cholecalciferol”).