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How long does it take for Valium to expire?
Answer:
I would not say that Expired Diazepan would be "Harmful" but it would be most likely much "less potent" or "useless". Now, they could be harmful if stored in unsafe conditions. Some US Army studies on Valium, for example, show that the drug is very stable and completely safe and effective for up to 8 years after manufacture.
The Medical Letter consultants believe that most drugs stored under reasonable conditions retain at least 70% to 80% of their potency for at least 1 to 2 years after the expiration date, even after the container has been opened (nb: current US Pharmacopoeia [USP] standard is generally 90% potency). With new individual pill packaging techniques, it is highly likely that USP acceptable potency would be the norm over that same time period.
Greetings,
John/
The Medical Letter consultants believe that most drugs stored under reasonable conditions retain at least 70% to 80% of their potency for at least 1 to 2 years after the expiration date, even after the container has been opened (nb: current US Pharmacopoeia [USP] standard is generally 90% potency). With new individual pill packaging techniques, it is highly likely that USP acceptable potency would be the norm over that same time period.
Greetings,
John/
First answer by ID1567475412.
Last edit by ID1567475412.
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