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.
1 Amazon is the seller of record.. 2  Products appear on the Amazon.com website as a product sold by Amazon. 3  For separate fees, you can store inventory in our warehouses and have us pack and ship for you. 4  Or, if you elect not to include Fulfillment by Amazon, you can fulfill your own order. Products appear on the Amazon.com website as a product sold by Amazon. 2  For separate fees, you can store inventory in our warehouses and have us pack and ship for you. 3  Or, if you elect not to include Fulfillment by Amazon, you can fulfill your own order.