Types of Side Effects

• Diarrhea and vomiting are the most common side effects of Clavamox, reports PetPlace.com
  
  

Time Frame

• Vomiting is most likely to occur shortly after you give your cat Clavamox as it occurs due to irritation in the stomach following ingestion.
  
  

Solution

• Giving Clavamox to your cat with food may decrease the stomach irritation that leads to vomiting.
  
  

Risks

• The most serious risk associated with the use of Clavamox is allergic reaction, reports Pfizer, the makers of the drug. If your cat has ever had an allergic reaction to penicillin or a cephalosporin drug, it should not take Clavamox.
  
  

Considerations

• Because its effects on fetal development are not known, veterinarians rarely prescribe Clavamox for use in pregnant cats, explains Pfizer. If your cat is taking tetracycline or chloramphenicol, it should not take Clavamox.