You’ve probably heard about vitamin D’s important role in maintaining strong bones and teeth. But it also plays other key ...

Historically, 400 IU (10 ug) of vitamin D was recommended for better health because it closely approximated the amount of vitamin D in a teaspoonful of cod liver oil. However, 800 to 1,000 IU is ...

Feb. 3, 2025 — Maternal vitamin D levels in the first trimester were related to both prenatal growth and pregnancy outcomes, according to a new study. Low vitamin D levels during the first ...

Plus, the addition of vitamin D3 and zinc has helped boost our immune system. While we did experience slight drowsiness after taking the supplement, we found that taking it at night was the best ...

However, a newer study also found that taking vitamin D3 supplements for over 146 days per year increased the risk of developing dementia and was also correlated with higher mortality rates in ...

In fact, we’ve reviewed and vetted more than 450 supplement brands. Here are the vitamin brands and products we recommend most. Disclaimer: Some of the brands below sent free supplements to ...