it is not recommended to take medications past their expiration dates. expiration dates are used on medications to ensure that the medication is being used at its highest quality. many medications can lose potency over time. while it is not likely to hurt you to use your nasal spray after its expiration date it may not work as well. i suggest you talk to your doctor and get a new prescription.
is it ok to take a steroid nasal spray if it expired a month ago?