If you've recently started taking a new vitamin or supplement, you might wonder how long it takes for vitamins to work or when you’ll notice a difference. The answer depends on several factors, ...

SEATTLE — As Pacific Northwesterners go deeper into the "big dark," some may wonder about their vitamin D levels. "It's so unique because it's the one vitamin that we actually get from the sun, ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." The past six months, I've watched Demi Moore with supreme envy every time her luscious, long hair comes ...

Find out how vitamin C and vitamin D function in your body, their role in immune defense, and how much you may need for optimal support.

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Does anyone actually like taking vitamins? You either have to chew up a gummy that is almost like candy ...

And more specifically, what does vitamin B12 do for you? Vitamin B12, also known as cobalamin, isn’t just a popular supplement marketed to help people lose weight— it’s an essential water-soluble ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Having to swallow a huge pill every day is the worst part of taking your daily vitamins. Not only can it ...

Alex Yampolsky, PharmD, is a pediatric clinical pharmacist at Elizabeth Seton Children’s center where he optimizes the comfort and care of his patients. Expired vitamins are generally safe but might ...