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Depends on too many factors to answer.

Time past ACTUAL expiration (a pharmacy has to mark all pills as expiring within 12 months of dispensing, even if the stock bottle they came out of says 3 years).

Condition pills were stored (hot, humid, dry, cool, etc).

You're never going to get a real answer to this question from a manufacturer, because the Manufacturer would never admit to a lengthy expiration period even if it exists. They want you to throw it away after a few months and buy more. Also, the manufacturer has to be able to certify, though testing, the period a medication is good for. They like to bring it out to a couple years and not have to worry about it any more, instead of needing to do tests for 10, 20, 30yrs. By then, the pill is probably being replaced by something newer and 'better' anyway.

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12y ago
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13y ago

It shouldn't harm you, but it might not be effective

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Q: Will taking expired cephalexin harm you it expired last year?
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