Can I still use Nasonex 6 months after opening it?

JulieAnn; Yes this is good to use just rinse the nose piece for any crustier parts shake well and remember only prime it one time which is when you spray the air out by pumping it straight up until the fluid shoots up. Then don't do that again unless it sits without using for over a month then use it as directed or if you have forgotten use one spray into each nostril once a day is normal. blow your nose first but try not to irritate the nasal passage so you can get air through them and then spray with the medicine. I swear it is as good as the day you got it. Also, best to keep it in a cupboard in the back where it is dark and as cool as possible have a good day.

My Nasonex bottles are all over the house, and I'm positive several were opened more than 6 months ago... they all work fine. Nun has the best advice I've heard in general regarding medicine potency, so please note what she had to say. Make sure you also give it a good shake, and depress the nozzle 3 or 4 times to clear the chamber.

It's true the effectiveness of a drug may decrease over time, but much of the original potency still remains even a decade after the expiration date. Excluding nitroglycerin, insulin, and liquid antibiotics, most medications are as long-lasting as the ones tested by the military.

If your life does not depend on an expired drug -- such as headache, common cold, or constipation -- you may take the medication and see what happens. Medical authorities uniformly say it is safe to take drugs past their expiration date -- no matter how "expired" the drugs presumably are.