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.
How to Contact Amazon. Two Methods: Contacting Amazon Resolving Disputes Effectively Community Q&A. If you have a question about an order, or an issue with service, contacting Amazon might be the best thing you can do. When contacting Amazon, you have the option of sending an email, having Amazon call you, and live chatting. This article will show you how to talk with a customer service representative at Amazon. If you want to call Amazon directly, contact their customer service line at 1 (888) 280-4331 Steps