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.
âº Contact us. 1  How To Contact Amazon Customer Service By Phone: Amazon Customer Service Phone NumbersOct 31, 2016. by Steve Bruce. 2  Amazon Customer Service Phone Number FindsMay 29, 2015. by Andrea Edwards and Txtanagent. 3  Amazon Fire Phone, 32GB (AT&T) by Amazon firephone. 3.6 out of 5 stars 3,710.