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.
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. 1. Call Amazon anytime, 24/7, at 1(888) 280-4331. This is the direct, general customer service line for any and all Amazon issues. If you're not near a computer with your account or are not sure what department to call, this is usually your best bet.