Vitamin D supplements are popular for bone health and immunity. When is the best time to take vitamin D? Here's how to take ...

There are two types of vitamin D supplements available for over-the-counter purchase (vitamin D2 and vitamin D3). Vitamin D3 is the type that most experts believe should be utilized in clinical ...

Most vitamin D3 supplements available over-the-counter are sold in dosages between 1000–5000 IU, but some are higher. “Ask for your provider’s recommendation as to what dosage, if any ...

Vitamin D2 aids calcium absorption, strengthens bones, and supports immunity. Found in plants, it's used to treat vitamin D ...