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How long after taking antibiotic keflex until my birth control is effective?

2 doctors weighed in
Dr. Jessica Khan
Internal Medicine - Infectious Disease
1 doctor agrees

In brief: Immidiately

Although certain antibiotics interact with birth control pills to render them less effective, Keflex is not really among those notorious for doing so.
In addition, it does not really hang around too long so that once you stopped taking them, within 24 hours, it is already out of your system.

In brief: Immidiately

Although certain antibiotics interact with birth control pills to render them less effective, Keflex is not really among those notorious for doing so.
In addition, it does not really hang around too long so that once you stopped taking them, within 24 hours, it is already out of your system.
Dr. Jessica Khan
Dr. Jessica Khan
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Dr. Dennis Higginbotham
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