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
2 answers • 2 Jun 2013
1 answer • 12 Dec 2013