Contact your veterinarian immediately if your cat experiences any of the following while taking amoxicillin:
- Severe vomiting or diarrhea: More than one episode of vomiting or loose stools lasting longer than 24 hours. Loss of appetite: Refusal to eat or drink for more than 24 hours. This is particularly concerning. Lethargy or unusual sleepiness: Noticeably more inactive or unresponsive than normal. Skin reactions: Hives, swelling, redness, or itching. Difficulty breathing: Wheezing, rapid breathing, or labored breathing. Jaundice (yellowing of the skin or eyes): This signifies liver problems. Seizures: Any unusual shaking or convulsions. Lack of improvement after 48-72 hours: If your cat’s symptoms haven’t improved after this timeframe, a vet visit is necessary.
Note: Amoxicillin can interact with other medications. Always inform your vet about all medications your cat is currently taking. The dosage should always be prescribed by a vet, never self-adjust it.
Your veterinarian can assess your cat’s condition and adjust the treatment plan as needed. Early intervention is key to better outcomes.


