While you can take certain supplements any time of the day, others need a little more careful planning. As a vitamin most Americans don’t get enough of, figuring out the best time to take vitamin D is ...

A new study suggests that high doses of vitamin D supplements could help reduce disease activity among multiple sclerosis patients. Experts weigh in on the findings.

Foods, including certain fish, egg yolks, and mushrooms, contain vitamin D. Changing your diet may help reduce or prevent vitamin D deficiency. The daily value (DV) for vitamin D is 600-800 IU (15 ...