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Cephalexin and alcohol interactions can occur.

Side Effects

Drinking alcohol may increase certain side effects of the drug, including dizziness, drowsiness, and nausea.


Cephalexin is not proven to interact with alcohol. Although, that doesn’t necessarily mean interactions aren’t possible. In addition, consuming alcohol may negatively affect the underlying infection that a person is attempting to treat. It is not recommended to drink alcohol with any antibiotics just to be safe.

Disclaimer: this article does not constitute or replace medical advice. If you have an emergency or a serious medical question, please contact a medical professional or call 911 immediately. To see our full medical disclaimer, visit our Terms of Use page.

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