The two main forms of vitamin D are vitamin D2 and vitamin D3. Vitamin D2 comes from plants and fortified foods, while vitamin D3 comes from sunlight when it touches the skin and animal products.

Learn how vitamin D benefits your body, and how to know to know if you're getting enough of this key nutrient.

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

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 ...

2. Supports the immune system: It reduces the risk of infections, particularly during flu season or for those with low vitamin D levels.

One study found that both Vitamin D2 and D3 are as equally bioavailable in orange juice as taking vitamin D capsules, meaning the body can still absorb the vitamins well. Milk is another drink ...

How to get more vitamin D Vitamin D can be divided into two types: D2 and D3. Vitamin D2 is found in plants, while D3 — which is considered the more effective form — is found in animal sources ...

Lauren Manaker, a registered dietitian nutritionist, outlined the effectiveness of D2 and D3 in food and supplements. “While both types can help improve vitamin D levels in the body, studies show that ...

There are two primary forms of vitamin D—D2 (ergocalciferol) and D3 (cholecalciferol). A vitamin D test, specifically the 25-hydroxyvitamin D blood test, is used to diagnose deficiency.

She spoke about two major types of vitamin D: D2, or ergocalciferol, and D3, or cholecalciferol. “Vitamin D2 doesn’t convert as effectively [in the body] ... compared to vitamin D3,” she said.

1. Is Vitamin D2 as effective as Vitamin D3? While both can raise vitamin D levels, Vitamin D3 is generally more effective at maintaining long-term levels in the body. 2. Can I get enough Vitamin ...