Determining the proper of Augmentin dosage for cats is essential to treating bacterial infections safely and effectively.
The usual dosage is 12.5 mg to 20 mg per kg (5 to 9 mg per pound) of body weight, every 12 hours (twice daily) by mouth.
While the veterinary name of this drug is often Clavamox, the active ingredients present in the drug, amoxicillin and clavulanate potassium, are the same.
Always follow your veterinarian’s individual prescription as the length of therapy and the actual dose depends on the severity and type of infection.
Discover the safe Augmentin dosage for cats with our 2026 guide. Includes a weight-based chart, mL calculator, and expert tips for effective treatment.
Disclaimer: This article is for informational purposes only and does not constitute professional veterinary advice. Always consult a licensed veterinarian before administering any medication to your pet. Dosage requirements vary based on individual health conditions, and the author assumes no liability for adverse reactions or misuse of the information provided.
Key Takeaways
- Standard Dose: The typical augmentin dosage for cats per day is split into two doses, roughly 6.25 mg per pound every 12 hours.
- Veterinary Equivalent: Augmentin is the human brand; the veterinary equivalent is Clavamox, specifically formulated for palatability in cats.
- Weight Matters: An accurate augmentin dosage for cats by weight calculation is essential to prevent under-dosing (treatment failure) or overdosing (gastrointestinal distress).
- Duration: Treatment usually lasts 5 to 7 days, but augmentin dosage for cats how many days varies based on the infection type (e.g., UTIs may require longer).
- Safety First: Never use human Augmentin suspensions that contain xylitol or medications past their expiration date.
What is Augmentin Dosage for Cats?
When we speak about Augmentin dosage for cats, we mean the administration of a combination antibiotic, which contains the active ingredient – amoxicillin and potassium clavulanate.
Amoxicillin is a type of penicillin antibiotic that combats bacteria; and clavulanate potassium is a beta-lactamase inhibitor, which prevents bacteria from becoming resistant to the antibiotic.
In the veterinary world, this drug is most often used under the name of Clavamox. While “Augmentin” is the human trade name, the chemical make-up is the same.
Understanding the amoxicillin clavulanate for cats dosage is vital because it is a broad-spectrum antibiotic that is utilized to treat many susceptible infections.
The dosage is not a “one size fits all” situation. It is calculated strictly according to the body weight. The purpose is to keep a fairly constant level of the drug in the blood of the cat to effectively kill the bacteria which are causing the illness.
This is the reason we find a reliable augmentin for cats dosage chart to be one of the top priorities for pet owners who are dealing with the home management of their cat’s health.
Is Augmentin Safe for Cats?
Yes, Augmentin (amoxicillin-clavulanate) is often prescribed to cats, although veterinarians usually do so under the brand name Clavamox or as a generic amoxicillin-clavulanate product.
One of the most frequently asked questions by pet owners is, “Is Augmentin safe for cats?” The answer is yes, as long as it is used correctly, under veterinary supervision.
It is approved by the FDA for use in dogs and cats (as Clavamox), for the treatment of skin and soft tissue infections, wounds, abscesses and urinary tract infections.
However, there’s a difference between human Augmentin and veterinary Clavamox:
- Palatability: Veterinary formulations (drops/chewables) are usually flavored to be palatable to the cat and can make administration easier.
- Concentration: Human pills are often higher-strength (500 mg or 875 mg, for example) and are hard to split safely for a 10-pound cat. Veterinary drops are concentrated for use in smaller patients.
- Ingredients: Some human liquid suspensions contain xylitol, an artificial sweetener, toxic to dogs. While cats aren’t as sensitive to xylitol as dogs, it’s still better to go with veterinary-formulated products.
How much Augmentin is safe for cats?
Safety is the main issue in dosing any antibiotic. So, how much Augmentin is safe for cats?
The safest of augmentin dosage for cats per kg is 12.5 mg/kg to 20 mg/kg twice daily. This works out to around 5.6 mg to 9 mg per pound.
For safety reasons, you have to take into account the amoxicillin clavulanate dosage for cats per kg limits:
- Under-dosing: Giving too little can cause resistance to antibiotics, which means that the bacteria will survive and mutate, making them harder to treat in the future.
- Overdosing: Although amoxicillin has a large margin of safety, overdosing may present with serious gastrointestinal symptoms, such as vomiting and bloody diarrhea.
If you are using human Augmentin tablets, you have to be very precise. For example, a standard human Augmentin 875 mg tablet is way too strong for a domestic cat.
You would normally need far less significant strength such as the 62.5 mg or 125 mg veterinary tablets, or the liquid suspension to measure a safe dose.
Augmentin for Cats Dosage Chart by Weight
Finding an accurate augmentin for cats dosage chart by weight can save you the time and worry. Below is a general guideline based on the standard veterinary dose of 12.5 mg /kg (approx. 6 mg/lb) to 20 mg/kg (approx. 9 mg/lb) of the amoxicillin/clavulanate combination.
Note: This chart is for information only. Always check with your vet before feeding medication.
Amoxicillin Clavulanate for Cats Dosage Chart by Weight
| Cat Weight (lbs) | Cat Weight (kg) | Low Dose (12.5 mg/kg) | High Dose (20 mg/kg) |
|---|---|---|---|
| 5 lbs | 2.3 kg | 28 mg | 45 mg |
| 8 lbs | 3.6 kg | 45 mg | 72 mg |
| 10 lbs | 4.5 kg | 56 mg | 90 mg |
| 12 lbs | 5.4 kg | 67.5 mg | 108 mg |
| 15 lbs | 6.8 kg | 85 mg | 136 mg |
How to read this chart: If you have a standard 10-pound cat, the augmentin dosage for cats by weight would be roughly 56 mg to 90 mg administered orally every 12 hours.
Liquid Augmentin Dosage for Cats in mL
For many cat owners, liquid suspension is the most convenient to give. The veterinary product (Clavamox) is typically a powder which you mix with water.
The standard concentration for veterinary liquid suspension is 62.5 mg/mL. Using this concentration makes it easy to use the augmentin dosage for cats calculator:
- 5 lb cat: 0.5 mL to 0.8 mL twice daily.
- 10 lb cat: 1.0 mL to 1.5 mL twice daily.
- 15 lb cat: 1.5 mL to 2.2 mL twice daily.
Important: If you are using human Augmentin suspension, the concentration is different (often 125 mg/5 mL or 250 mg/5 mL). The use of human liquid does require a different calculation.
For example, if the concentration is 125 mg/5 mL (25 mg/mL), if a 10 lb cat needed about 60 mg, it would need 2.4 mL. Always look at the bottle label for the mg/mL concentration.
Augmentin Dosage for Cats Calculator
Calculating the exact dose to take prevents errors. Here is a straightforward method to figure out the augmentin dosage for cats per pound calculator mentally:
- Find concentration: Look at your bottle. Is it 62.5 mg/mL (this is common for vets) or 25 mg/mL (this is common for human pediatric syrups)?
- Calculate the mg needed: Multiply your cat’s weight in pounds by 6 mg (conservative dose) or 9 mg (aggressive dose).
- Example: 12 lb cat x 6 mg = 72 mg needed.
- Convert mg to mL: Divide the amount of mg required by the concentration.
- Example: 72 mg / 62.5 mg/mL = 1.15 mL.
This manual augustin dosage for cats calculator method will ensure you are giving the correct volume, regardless of whether you are using a dropper or syringe.
Augmentin Dosage for Cats: How Many Days?
The length of treatment is as important as the dose used. Owners often ask about augmentin dosage for cats how many days is necessary for a cure.
- Standard Duration: Most soft tissue infections (like abscesses or wounds) are treated for 5 to 7 days.
- Complex Infections: For deep infections, severe UTI, or respiratory infections, the treatment may be for 10 to 14 days or more.
- The Golden Rule: Even if your cat looks better after 3 days, do NOT stop the medication. Stopping early can cause a relapse with a stronger, antibiotic resistant strain of bacteria. Always finish the entire course of antibiotics your vet has prescribed.
Amoxicillin Clavulanate for Cats Dosage: Specific Infections
The amoxicillin clavulanate for cats dosage may be slightly different depending on what’s being treated.
1. UTI (Urinary Tract Infection)
For a UTI, the dosage of augmentin used in infected cats generally falls on the higher end of the spectrum, to get the drug to penetrate the urinary tract effectively.
Treatment often lasts between 10 to 14 days and a follow-up urine culture is recommended to be sure the infection is gone.
2. Respiratory Infections
For upper respiratory infections (URI), which are often present in shelter cats or kittens, amoxicillin-clavulanate is a first choice antibiotic.
The amoxicillin clavulanate for cats dosage per kg is usually on the higher end (20 mg/kg), if the infection is severe.
3. Skin Infections and Abscesses
This is the most common use case. Cat bite abscesses are anaerobic infection that responds very well to Clavamox. The of augmentin dosage for cats per day for skin problems typically clears up the swelling within 48 to 72 hours.
Administration Guide: How to Give Augmentin to Cats
Giving medication to a cat can be a challenge. Here is a step-by-step guide to how to administer oral augmentin for cats dosage chart pdf recommendations effectively:
- Check the Label: Shake liquid suspensions well. The drug settles to the bottom and if it isn’t shaken, an under-dosing on the first dose and an over-dosing on the last one happens.
- Syringe Method: Draw Up the Right Amount Put the syringe in the corner of the cat’s mouth (the “pocket” behind the canine tooth) and deliver as slow as possible. Do not try to go back into the throat, however, as this will cause the gag reflex.
- Food Hiding: If you are using tablets, you can conceal them in a “pill pocket” treat or a small ball of wet food.
- With Food: Augmentin can cause upset stomach. It is generally recommended to give this with a little bit of food to minimize the risk of vomiting.
Side Effects and Precautions
While you look for an augmentin dosage for cats chart pdf you should also be aware of some possible side effects.
- Gastrointestinal Upset: The most common side effects are vomiting and diarrhea. This occurs because the antibiotics wipe out “good” gut bacteria as well as the bad. Feeding a probiotic (separated by a few hours from the dose of antibiotic) can help.
- Allergic Reactions: although rare, allergic reactions to penicillin in cats are known to occur. Signs include swelling of the face, hives or difficulty breathing. Seek emergency attention if this happens.
- Contraindications: Do not use Augmentin in cats with a known history of allergies to penicillin or cephalosporins. Use with caution in cats with kidney or liver impairment as this drug is processed through these organs.
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FAQs
Can I give human Augmentin to my cat?
You can but only if your veterinarian calculates the correct dose. Human tablets are often too strong and need to be broken. Never use human liquid Augmentin that contains xylitol. It is always safer to take the veterinary formulation (Clavamox).
What is the Difference in Clavamox and Augmentin?
They are the same medication (amoxicillin + clavulanate). Clavamox is the animal brand name that has been licensed, and Augmentin is the human brand name. However, the dosage of augmentin for cats is the same as the dosage of Clavamox.
What if I miss a dose?
If you miss a dose, give the dose as soon as you remember. If it is almost time for the next dose, skip the one that was missed and get back on the schedule. Do not take a double dose to make up for one that is missed.
How should I keep Augmentin for cats?
Tablets should be kept at room temperature in a dry place. Liquid suspensions usually need to be refrigerated (do not freeze). Discard unused liquid after 10 days (or as directed on the bottle) as the liquid will lose potency.
Is there an Augmentin dosage for cats per pound calculator available online?
While there are plenty of veterinary websites that provide calculators, it is safer to use the specific mg/mL calculation based on your specific medication bottle. The concentration differs from brand to brand so a generic calculator can sometimes be misleading.
Final Thoughts
Navigating your cat’s health woes can be stressful, but knowing the proper of Augmentin dosage for cats helps you to be a proactive and responsible cat owner.
While charts and calculators are incredibly helpful tools, they’re intended to supplement – not replace – professional veterinary advice.
Antibiotics are great medications but if they are used responsibly it can help to ensure your feline friend recovers quickly without contributing to the global problem of antibiotic resistance.
Remember, always, that every cat is different. Factors such as age, kidney function, and the severity of infection play a massive role in the safe dosage of augmentin for cats by weight.
What works for a healthy adult cat may not work for a roomful of senior feline, for example, or a youthful kitten. Ultimately, it is the goal to restore your cat’s health with a minimum of stress.
By taking the advice of your veterinarian, using accurate measurements and completing the full course of treatment, you are giving your cat the best chance for a quick and complete recovery.
If you ever feel unsure about a dose or experience any unexpected side effects, never hesitate to pick up the phone and call your vet – it is always better to ask than to guess when it comes to medication.
