In fact, a 3-ounce serving of salmon may provide up to 570 international units (IU) of vitamin D ... Vegan D3 is significantly less common than D2 but can be made from lichens.

Share on Pinterest Ritual offers a variety of multivitamins, protein powders, and other supplements made from simple ... including vitamin D3, which is necessary for maintaining strong bones ...

After the health secretary promoted vitamin A as a cure ... “In my final weeks at the C.D.C., I watched as career infectious-disease experts were tasked with spending precious hours searching ...