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Stability after expiration date?

Stability after expiration date? - Chemistry Forum

Stability after expiration date? - Chemistry Forum. Discuss chemical reactions, chemistry.


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  #1  
Old 09-28-2010, 05:44 PM
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Question Stability after expiration date?



Hi,

I have a question. How long is an antibiotic (in intravenous presentation) stable after its expiration date?

I'm not planning in using it for clinical purposes, I'm using it for research but I want to know how long I can keep using it before I have to get a new one.

Thanks in advance.
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Old 07-08-2011, 04:25 PM
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Default Re: Stability after expiration date?

In general, I believe that it depends on the country you live in and the conditions around you. The reason is simple.

The government body which controls medication in your country helps the pharmaceutical company decide what is the best expiration date. Generally, the expiry date is set such that if that time period is crossed less than 90% of the drug is lost. That means after the expiry, less than 90% of the drug will still remain in the formulation.

The second factor which would control it would be the place where you are. The reason is environmental factors and storage conditions could result in loss of the active ingredient due to decomposition. In general, medicines decompose more slowly in cool, dry and dark places.
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  #3  
Old 06-18-2013, 02:36 PM
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Default Re: Stability after expiration date?

I didn't gave myself the chance before to thank you for answering my question coolakul. Guess is better late than never.

Hope you manage to see it.
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