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Vitamin D deficiency is quite common, so plenty of folks are heading down the supplement aisle in search of a pill to correct it—but when they get there, they’ll find a variety of options. If it’s ...

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You can get vitamin D3 from sun exposure, lichen, and animal sources, such as fish oil and egg yolk. You can get vitamin D2 from plant sources. Your body metabolizes vitamin D2 and D3 differently.

Some supplements and medications come with specific instructions on when and how to take them, while others you simply need to remember to take every day. But which category does vitamin D fall into?

Emmanuella Ogbonna is a licensed pharmacist, health writer, and medical researcher. Vitamin D and omega-3 support bone, heart, brain, and immune health. Taking them together may reduce inflammation ...

It may be best to take vitamin D in the morning because taking it at night might reduce melatonin production. Most foods do not have enough vitamin D to meet people's needs, so supplements can help ...