Learn what happens when you take vitamin D supplements long term. Get evidence-based guidance on safety, potential benefits, ...

Taking too many vitamins and supplements may cause health problems, including vitamin toxicity, interactions, gastrointestinal distress, and kidney damage.

Plus, which ones you should never take together.

The best time to take vitamin B12 depends on why you are taking it and in what form. Learn the best timing for your needs.

(Peter Dazeley/The Image Bank/Getty Images) The "sunshine vitamin" may come with a dark side. Just as a lack of vitamin D can ...

C-ing is B-elieving — supplements are everywhere these days. Over 100,000 dietary or nutritional supplements are sold in the US alone. One survey indicated that about 74% of American adults take these ...

How many times per week have you heard: I am so tired! from a friend, family member or out of your own mouth. About 1 in 5 adults complain of general fatigue, and constantly being tired is, well, ...

Many people supplement with vitamin D, especially during the colder months when it’s more difficult to get your daily dose from sunlight (since your skin makes vitamin D with sufficient sunlight ...

Vitamin D is important for many parts of your health, including your bones, immune system, and muscles. Some studies show that taking vitamin D supplements daily may help lower blood pressure, too.

Maintaining normal vitamin D levels can help support healthy sleep patterns. However, the time of day you take vitamin D may ...

Plus, the best ways to supplement your body if you find out you're deficient.

Improve vitamin D absorption by focusing on magnesium, vitamin K2, healthy fats, proper doses, and adequate sunlight. | ...