Doctors and dietitians break down the biggest signs and symptoms of vitamin B2 deficiency. Plus, how much vitamin B2 you need in your diet and how to get it.

This is a more unique symptom of riboflavin deficiency, leading to lesions at the corners of your mouth. “You may get scaling ...

Being low on vitamin D can increase your risk of high blood pressure and diabetes, says Michael Holick, M.D., endocrinologist ...

How long it takes for vitamins and supplements to work depends on factors like the type of vitamin, your diet and hydration, ...

The Australian regulator admits it may have underestimated the extent of the side effects from vitamin B6 supplements ...

Women who might become pregnant should be especially cautious with vitamin A supplements or avoid them entirely .

For example, 3,000 IU of vitamin A (as retinol) is 900 mcg RAE. About 18,000 IU beta carotene, which is less potent than ...

Vitamin D supplements are generally in your system after 4 to 12 weeks. Learn more about the importance of consistent ...

If I am taking vitamin A, what is a reasonable dose? I have seen reports that taking too much can cause liver damage, but ...