Reactions to Cephalexin in Dogs

Cephalexin is a generic prescription medication used to treat pneumonia and skin, bladder, wound and bone infections in dogs. Despite its effectiveness in eliminating bacteria, cephalexin can cause adverse reactions in some dogs.

  1. Types of Side Effects

    • The most common side effects of cephalexin are vomiting and nausea. Diarrhea, drooling, rapid breathing and excitability are also possible.

    Time Frame

    • Vomiting and nausea from cephalexin are most likely to occur shortly after a dog takes the medication.

    Solution

    • Often nausea and vomiting are easily eliminated by giving a dog food with each dose of cephalexin.

    Risks

    • Although this happens Infrequently, dogs sometimes develop severe allergic reactions to cephalexin, resulting in itching, skin rash and difficulty breathing like wheezing or gasping. Dogs showing such symptoms require emergency veterinary attention.

    Considerations

    • Dogs with a history of allergic reactions to penicillin or amoxicillin should not take cephalexin because such animals are more susceptible to reactions to the drug.