Discover how vitamins D3 and K2 work together to boost bone, heart, and immune health. Learn about the benefits of organic ...

Vitamin D2 supplements may negatively impact circulating levels of vitamin D3 and negate the latter's potential benefits, ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Do you ever feel like you take an endless supply of vitamins and supplements but are potentially not ...

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

Ritual is a vitamin subscription service. It sells products with simple, traceable ingredients, including this multivitamin designed for women ages 18 and over. Each serving contains 50 mcg (2,000 IU) ...

Like other vitamins, vitamin D is a substance needed for health but only in tiny amounts. Unlike other vitamins, it doesn't occur naturally in many foods (except seafood, mushrooms, and egg yolks), ...

Vitamin D is one of the most commonly supplemented vitamins–especially in regions and during seasons with little sunlight. It ...

What is vitamin D3? Your body creates this vitamin naturally when exposed to sunlight. In the winter, however, we tend to stay inside more, making it harder to get the proper amount of D3. There are a ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." While you can take certain supplements any time of the day, others need a little more careful planning.

There are some supplements that you can take whenever and wherever, regardless of the time of day, what you've eaten, or what else you've taken that day. Then there are others that require a bit more ...