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.
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What kind of chemical breakdown occurs after the expiration date is reached, and how long after the expiration date can you take the medication? What ...
2 answers • 3 Aug 2011
Are they safe to take after expiration date?
1 answer • 3 Sep 2011
2 answers • 2 Jun 2013
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