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.
Call Amazonâs UK general enquiries helpline on 0870 183 0604 at 13p per minute plus access charge, for help with all aspects of buying and selling on Amazon. Alternatively you can call Amazonâs UK freephone number 0800 279 7234, or call 0843 504 7194 at 7p per minute plus access charge, or phone their London office directly on 0207 084 7911.