Does flonase expire?

Yes: All medications have an expiration date. Typically 12 months but check to make sure. An albuterol inhaler does have a two year expiration date and other medications might vary. Check the bottle.

Yes: The active ingredient breaks down and loses is effectiveness after some time. It doesn't become poisoness or anything.

Yes: Check the expiration date if you have your flonase for a while.