Amoxicillin Dosage for Cats
Amoxicillin is commonly used in cats to treat bacterial infections such as respiratory infections, abscesses, and urinary tract infections. Typical dosing ranges from about 10–20 mg per kilogram of body weight every 12 hours.
What Is Amoxicillin Used for in Cats?
Amoxicillin (Amoxicillin) may be recommended by veterinarians for several conditions in cats. Always consult your vet before starting any medication.
Respiratory Infections
Amoxicillin is often prescribed for upper respiratory bacterial infections in cats.
Abscesses and Wounds
It is commonly used to treat bite wounds and abscesses, especially after drainage.
Urinary Tract Infections
Amoxicillin may be used for UTIs caused by susceptible bacteria.
Dental Infections
It may help treat infections involving teeth and gums.
Amoxicillin Dosage Guide for Cats
Typical dosing ranges from about 10–20 mg per kilogram every 12 hours depending on the infection.
Standard Dose
Typical Frequency
Maximum Daily Doses
Single Dose by Cat Weight
Use the table below as a quick reference for the recommended single dose range based on your cat's weight. These figures are estimates only and should be confirmed with your veterinarian.
| Cat Weight (kg) | Cat Weight (lb) | Single Dose Range |
|---|---|---|
| 2 kg | 4.4 lb | 20–40 mg |
| 3 kg | 6.6 lb | 30–60 mg |
| 4 kg | 8.8 lb | 40–80 mg |
| 5 kg | 11.0 lb | 50–100 mg |
| 6 kg | 13.2 lb | 60–120 mg |
| 7 kg | 15.4 lb | 70–140 mg |
Based on 10–20 mg per kg. Always use your cat's current body weight for accurate dosing.
These dosage figures are for general reference only. Individual factors such as health conditions, other medications, and breed may affect the appropriate dose. Always confirm with a licensed veterinarian before administering any medication.
Side Effects of Amoxicillin in Cats
Like all medications, Amoxicillin may cause side effects in some cats. Monitor your cat after each dose and contact your vet if symptoms are severe or persistent.
Gastrointestinal Upset
Vomiting or diarrhea may occur during treatment.
Loss of Appetite
Some cats may eat less while on antibiotics.
Allergic Reactions
Rare but possible reactions include swelling or difficulty breathing.
When Not to Use Amoxicillin
Amoxicillin may not be suitable for all cats. The following conditions may require extra caution or an alternative treatment recommended by your vet.
Penicillin Allergy
Cats with known allergies to penicillin should not receive amoxicillin.
Severe Kidney Disease
Dose adjustments may be required.
Previous Antibiotic Reaction
Cats with prior adverse reactions should be evaluated.
Important Precautions
Before giving Amoxicillin to your cat, keep the following precautions in mind to ensure safe and effective use.
Complete Full Treatment
Finishing the entire antibiotic course is essential for effectiveness.
Monitor for Side Effects
Watch for vomiting, diarrhea, or behavioral changes.
Signs of Amoxicillin Overdose in Cats
If your cat receives too much Amoxicillin, watch for the following warning signs and seek veterinary help immediately.
If you suspect an overdose, do not wait for symptoms to worsen. Contact your veterinarian or an emergency animal clinic immediately.
Severe Digestive Symptoms
Overdose may cause vomiting or diarrhea.
Neurological Signs
Very high doses may lead to tremors or seizures.
Kidney Impact
Excess dosing may stress kidney function.
Seek Veterinary Care
Immediate veterinary attention is recommended.
Monitor Closely
Observe for worsening symptoms or unusual behavior.
Drug Interactions to Be Aware Of
Amoxicillin may interact with other medications. Always inform your vet of any other treatments your cat is currently receiving.
Other Antibiotics
Concurrent antibiotic use may affect effectiveness.
Antacids
May influence absorption of the medication.
After-Dose Care for Your Cat
After administering Amoxicillin, these steps can help ensure your cat remains comfortable and recovers well.
Monitor Recovery
Check for improvement in infection symptoms.
Maintain Hydration
Ensure the cat has access to fresh water.
Watch Appetite
Monitor eating behavior during treatment.
Feeding Considerations While Using Amoxicillin
Diet and feeding habits may affect how your cat responds to Amoxicillin. Keep the following in mind during treatment.
Give With Food
Food may help reduce stomach upset.
Support Digestive Health
Probiotics may be considered to support gut balance.
Frequently Asked Questions
What is the amoxicillin dosage for cats?
The typical dosage for cats is about 10–20 mg per kilogram of body weight every 12 hours. The exact dose depends on the infection being treated and the cat's overall health. A veterinarian will determine the appropriate dose and duration for the specific condition.
How long does amoxicillin take to work in cats?
Amoxicillin usually starts working within 24 to 48 hours. You may notice improvement in symptoms such as reduced swelling, discharge, or lethargy. However, even if your cat seems better, the full course of treatment should be completed to fully eliminate the infection.
Can amoxicillin upset my cat’s stomach?
Yes, some cats may experience mild gastrointestinal upset, including vomiting or decreased appetite. Giving the medication with food can help reduce these effects. If symptoms are severe or persistent, you should contact your veterinarian for guidance.
Related Medications for Cats
Explore dosage guides for other commonly used medications in cats.