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

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 ...

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

A study conducted at the Botucatu School of Medicine at São Paulo State University (FMB-UNESP) in Brazil has shown that low-dose vitamin D supplementation can increase the effectiveness of ...

Introduction Vitamin K has been suggested to have protective effects against progression of vascular calcification and development of cardiovascular disease (CVD). However, few well-powered randomised ...

Vitamin A supports healthy eyes, skin, immune function, and more. Who needs a supplement? Experts discuss the benefits, risks, and how to take them.

It's no fun watching your new baby getting a shot soon after birth, but one vitamin K injection provides important protection for them against a scary condition. "Vitamin K injection is a vital ...

Researchers have long explored ways to prevent and treat prostate cancer, one of the most common cancers in men. For years, many believed antioxidants like vitamin E could stop or slow cancer. But ...