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Is Metformin Tablet Effective After Expiry Date?

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Posted on Fri, 2 Jan 2015
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. Michelle Gibson James (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
Note: For further follow-up, discuss your blood glucose reports with our diabetologist. Click here.

Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar
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Answered by
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Dr. Michelle Gibson James

General & Family Physician

Practicing since :2001

Answered : 16808 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