Longtime Beauty Brains community members know how we do not encourage the use of vitamin supplements. In the US, these products are not regulated and can be dangerous. And Vitamin D is especially dangerous because it can be toxic at high levels. Your best bet is to avoid supplements and eat real food. So instead of recommending vitamin supplements, we thought we’d list the best foods you can eat to get your vitamin D. Included are the amount of IU and the serving size.