My previous ""blue"" inhaler has just run out and when I went to the medicine cabinet, the other one I had turns out to be about to expire. The ""new"" (i.e. unused) inhaler is the same kind (blue Ventolin Evohaler of 100 micrograms salbutamol sulphate) was prescribed in December 2011 and is stamped to expire in June 2013. Is it still OK to use? When they expire do they just lose their effectiveness or are they actually harmful?
These days I am a light user of the reliever and often if I don't use it to relieve my symptoms I usually find they pass after about an hour if I just sit down and relax, so it's not desperately urgent, and I'll be getting a repeat prescription asap, but just wondered.
This is my first time on this forum btw so apologies if this is a commonly asked question, although I did have a search and couldn't seem to find it.