Historically, 400 IU (10 ug) of vitamin D was recommended for better health because it closely approximated the amount of vitamin D in a teaspoonful of cod liver oil. However, 800 to 1,000 IU is the ...
If you eat a vegan diet, getting enough vitamin D each day can be challenging. Many of the foods highest in vitamin D, such as salmon, egg yolks, and shellfish, aren’t vegan-friendly. Taking in ...