That’s because our body doesn’t make enough of the stuff in the darker months as sunlight decreases. Vitamin D is key to ...

Taking vitamin D2 may lower vitamin D3 levels, suggesting the two forms aren’t interchangeable. Vitamin D3 appears more ...

Researchers analyzed 11 trials with 655 adults and discovered that taking vitamin D2 supplements decreases the body's vitamin ...

While the recommended daily intake of vitamin D is 600 international units (IU) a day, you may need to take up to 3000 IU ...

Exhaustion is the number-one sign of a vitamin D deficiency. So if you’re feeling tired—even when you’ve gotten enough ...

Since vitamin D accumulates in the body, taking a high-dose supplement may lead to vitamin D toxicity. This causes nausea, vomiting, and weakness.

A new study reveals that taking vitamin D2 supplements might surprisingly lower your body's crucial vitamin D3 levels, ...

“However, we discovered that vitamin D2 supplements can actually decrease levels of vitamin D3 in the body, which is a ...

We've assessed vitamin D supplements from brands including BetterYou, Boots, Holland & Barrett, Vitabiotics and more to ...

A widely anticipated study has concluded that neither vitamin D nor fish oil supplements prevent cancer or serious heart-related problems in healthy older people, according to research presented ...

Trying to choose the best daily vitamin for your health? You’re not alone. Millions of Americans take vitamins every day, but ...

Milk is another drink that is often fortified with vitamin D to help us get this valuable nutrient. Like orange juice, milk is not a natural source of vitamin D, but the FDA allows manufacturers to ...