Cephalexin and alcohol interactions can occur.
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.