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.
Part 4. 1  1. Visit your seller account. 2  2. Change or add to your account information by using the seller account information link. 3  3. Search for a specific order.  4. Wait for an item to be 1  sold. 5. View your ratings and feedback routinely.  6. Sell more 1  items. 7. Issue a refund for an order, should the need  arise.