Side Effects of Clavamox for Cats

As a medication for cats, Clavamox can be a helpful and efficient antibiotic to treat a number of bacterial infections. There can be side effects when taking Clavamox, but generally this antibiotic is considered a safe treatment option for cats.

Uses for Clavamox in Cats

Clavamox is a mix of amoxicillin and clavulanic acid, two medications that work in combination to fight bacterial infections. Clavamox may be used to treat skin wounds and abscesses, urinary tract infections, tooth infections, pneumonia, injuries caused by bites and other infections. The medication cannot be used to treat infections caused by a virus or parasite.

Side Effects of Clavamox

If you notice any health changes in your cat after administering Clavamox, contact your vet's office immediately. Side effects may include:


  • Vomiting
  • Allergic reactions
  • Diarrhea or loose stool
Feeding your cat before administering the medication may help prevent vomiting, one of the most common side effects.


While Clavamox is normally considered a safe antibiotic, some cats do experience these side effects. Cats that have had allergic reactions with amoxicillin should not take Clavamox. Always follow your veterinarian's instructions regarding dosage amounts and medication schedules, even if symptoms appear to clear up early. Clavamox can be taken in tablet form or as a liquid medication, and must be stored properly in order to remain effective.