Is it safe to use Promethazine past expiration date?
Question posted by menderella on 1 July 2009
Last updated on 2 July 2009 by suzanne66
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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