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 sends you an e-mail notification when an item sells and posts the order in your seller account. In case you don't get the e-mail (or it is filtered as spam), make sure to check for orders in your seller account regularly. How to check orders. Ship items to your buyers.