2 Jul 2009
Generally it is not recommended that drugs are used past their expiry date. This is because the manufacturer can no longer guarantee their safety or efficacy. In this case Promethazine starts destabilising once the bottle is open and exposed to oxygen making it less effective. If you were to use the expired medicine it will probably be ineffective.
Search for questions
Still looking for answers? Try searching for what you seek or ask your own question.
If the expiration date on the foil of my Microgestin FE 1/20 pack says it expires 11/2011, is it still safe and potent beyond that date?
1 answer • 13 Mar 2011
Are they safe to take after expiration date?
1 answer • 3 Sep 2011
I have an unopened bottle of maximum strength biotin that has the expiration date of May 2013. Would it still be safe to take?
0 answers • 23 Aug 2014
Expiration date is just about two years past. Will it be effective enough for pain from a recent tooth extraction?
1 answer • 20 Apr 2015
I had a box that was new and one that was a year past its expiration date. I used the old one by mistake. Is it going to harm me in any way?
0 answers • 8 Jun 2015