Very few foods naturally have vitamin D. Fortified foods provide most of the vitamin D in American diets. 1  Fatty fish such as salmon, tuna, and mackerel are among the best sources.  Beef liver, cheese, and egg yolks provide small amounts.
Note: To contact a Seller requesting an invoice for an item Fulfilled by Amazon: 1  Go to Your Orders. 2  Click on the Seller's name, located below the item title. 3  Click on Contact Seller in More Information. 4  Fill out the information request form.
Amazon.com provides a customer service email contact on the official website. You must be a registered Amazon.com user in order to utilize the email function. You can email customer service here: https://www.amazon.com/gp/help/contact-us/general-questions.html?ie=UTF8&nodeId=518316&type=email&mode=&skip=true#a.