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Is Metformin Tablet Effective After Expiry Date?

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Posted on Mon, 8 Dec 2014
Twitter Mon, 8 Dec 2014 Answered on
Twitter Fri, 2 Jan 2015 Last reviewed on
Question : I have a bottle of Metformin with an expiration date of XXXXXXX 2013. Might it still be effective?
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Answered by Dr. Dr. Michelle Gibson (22 minutes later)
Brief Answer:
not effective and may be harmful

Detailed Answer:
Hi, thanks for using healthcare magic

No, unfortunately it would not be safe to use this medication. Not only would it not be as effective as it should be but the side effect profile would be different.

The possible metabolism of the medication would be altered.

It would best to use current medication.

I hope this helps,feel free to ask any other questions
Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar
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Answered by
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Dr. Dr. Michelle Gibson

General & Family Physician

Practicing since :2001

Answered : 16845 Questions

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Is Metformin Tablet Effective After Expiry Date?

Brief Answer: not effective and may be harmful Detailed Answer: Hi, thanks for using healthcare magic No, unfortunately it would not be safe to use this medication. Not only would it not be as effective as it should be but the side effect profile would be different. The possible metabolism of the medication would be altered. It would best to use current medication. I hope this helps,feel free to ask any other questions