Medically reviewed by Qin Rao, MD Vitamins that are water-soluble—including C and B-complex—dissolve in water and aren't stored, so you need to get enough of them regularly to avoid deficiency. The ...

Medically reviewed by Jamie Johnson, RDN 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 ...

Still, overdosing on "both water- and fat-soluble vitamins can cause a range of adverse reactions including irregular heartbeat, frequent urination, abdominal pain, weakness and appetite loss ...

Buildup of fat-soluble vitamins can cause harm Dr. Anthony Komaroff Ask Dr. K DEAR DOCTOR K: When I asked my doctor about supplements, she said something about water-soluble and fat-soluble vitamins.

Fat-soluble vitamins are better absorbed with a meal containing fat, while iron supplements are usually recommended on an empty stomach or with a vitamin-C-rich beverage, like orange juice.

Taking supplements for fat-soluble vitamins, such as A, D, E, and K, can be beneficial. Foods to avoid and why. A person with EPI can aim to avoid: high fiber foods; heavy meals; alcohol; ...