In this article: Hum Here Comes The Sun High-Potency Vitamin D3 2,000 IU, Nature Made Extra-Strength Vitamin D3 Dietary Supplement and Feel Great Kids Vitamin D3 1000 IU Gummies What does vitamin D3 ...
What is vitamin D3? Your body creates this vitamin naturally when exposed to sunlight. In the winter, however, we tend to stay inside more, making it harder to get the proper amount of D3.