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.
Here are some of the reasons a customer may wish to call the Amazon contact number: 1  I have made a mistake with my delivery. 2  My item has not been delivered â where is it? 3  A product has been damaged or is faulty.  I wish to report a third party 1  seller. I am having trouble with a device.  I wish to know more about Prime.