FluMist, a vaccine nasal spray, can now be used at home. Here's what to know about cost and more.

Those looking to protect themselves against the flu this season now have an at-home option. FluMist , the only nasal spray flu vaccine approved by the Food and Drug Administration, is now available for purchase for self-administration.

AstraZenca's FluMist was approved in 2003 to be given by health care providers. Last year, the FDA broadened the approval of the nasal spray to make it the first self-administered option.

An at-home delivery service, called FluMist Home , will be available in 34 states this flu season. Through FluMist Home, customers can get the same FluMist nasal spray — shipped to their homes — that patients can receive at a doctor's office or pharmacy.

How much does FluMist cost?

According to the online ordering platform, FluMist is free under most