Reviewed By: Medsdog Team
Last Updated: 24 August 2026
Administering the correct Clavamox Dosage for dog is very important in order to ensure that treatment is effective and that your dog does not suffer any potential side effects.
Too little, and the infection won’t clear too much, and your furry friend can experience unnecessary side effects.
Using the Clavamox dosage calculator for dogs by Weight as a pet owner or vet can help determine the appropriate amount of dosage based on the weight, age and health condition of your dog.
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This guide offers a closer look at the dosing of Clavamox, how to refer to it safely and provides some practical tips on ensuring your dog gets the correct antibiotic therapy needed.
Clavamox Dosage Calculator for Dogs
Based on the FDA-approved label dose of 6.25 mg/lb (13.75 mg/kg), given every 12 hours.
What is Clavamox For Dogs Dosage and How Does it Work?
Clavamox is a prescription antibiotic that is a combination of amoxicillin and clavulanate potassium.
It belongs to the penicillin category and is effective against a wide range of bacterial infections in dogs including skin infections, urinary tract infections and dental infections.
- Amoxicillin: Kills bacteria by inhibiting the development of the cell wall.
- Clavulanate potassium: Protects amoxicillin against mechanisms of bacterial resistance.
This combination allows Clavamox to be a trusted choice in veterinary medicine.
How Much Clavamox to Give a Dog (mg/kg and mg/lb)
The FDA-approved label dose Clavamox dosage for dogs is 6.25 mg per pound of body weight (13.75 mg/kg), given by mouth every 12 hours, with food.
Remember this is the standard starting dose your veterinarian will typically prescribe for a dog with a skin, soft tissue, dental, or periodontal infection. It applies whether you’re using the chewable tablets or the oral suspension (drops).
So if you’re asking how much Clavamox to give a dog per pound, the short answer is: multiply your dog’s weight in pounds by 6.25 to get the milligram dose for one administration, then repeat every 12 hours.
In certain conditions your veterinarian may adjust this range slightly (12.5–20 mg/kg) for more resistant infections).
Why Proper Dosage Matters
Incorrect dosing can lead to:
- Infective UTI Ineffective treatment/persistent infections
- Possible antibiotic resistance in patients
- Digestive upsets (vomiting or diarrhea)
- Rare but serious allergic reactions
Staying within a dose by using a Clavamox dosage calculator for dogs per pound or per kg allows us to be sure your dog is getting a precise and safe dose.
Clavamox Dosage Chart for Dogs by Weight
| Dog’s Weight | Dose per Administration (mg) | Clavamox Oral Suspension Dosage (mL) | Clavamox Dosage (Tablet Strength) |
|---|---|---|---|
| 5 lb (2.3 kg) | 31.25 mg | 0.5 mL | 62.5 mg (half tablet) |
| 10 lb (4.5 kg) | 62.5 mg | 1 mL | 62.5 mg |
| 20 lb (9 kg) | 125 mg | 2 mL | 125 mg |
| 30 lb (13.6 kg) | 187.5 mg | 3 mL | 125 mg + 62.5 mg |
| 40 lb (18 kg) | 250 mg | 4 mL | 250 mg |
| 50 lb (22.7 kg) | 312.5 mg | 5 mL | 250 mg + 62.5 mg |
| 60 lb (27 kg) | 375 mg | 6 mL | 375 mg |
| 70 lb (31.8 kg) | 437.5 mg | 7 mL | 375 mg + 62.5 mg |
| 80 lb (36.3 kg) | 500 mg | 8 mL | 375 mg + 125 mg |
| 90 lb (40.8 kg) | 562.5 mg | 9 mL | 375 mg + 187.5 mg |
| 100 lb (45.4 kg) | 625 mg | 10 mL | 375 mg + 250 mg |
Clavamox: 62.5 mg, 125 mg, 250 mg & 375 mg Dosage For Dogs
Clavamox chewable tablets come in four strengths; make sure you chose the right tablet strength for your furry friend.
- Clavamox 62.5 mg for dogs: Fits dogs around 10 lb (4.5 kg). Often split for very small puppies closer to 5 lb.
- Clavamox 125 mg for dogs dosage: Sized for dogs around 20 lb (9 kg). This is one of the most commonly prescribed strengths for small-to-medium breeds.
- Clavamox 250 mg for dogs dosage: Matches dogs around 40 lb (18 kg) a common strength for medium dogs like Beagles or Border Collies.
- Clavamox 375 mg for dogs dosage: Sized for dogs around 60 lb (27 kg), typically used for large breeds such as Labradors or Golden Retrievers.
For canines that exceed these weights, vets commonly combine two tablet strengths (for example, a 250 mg + 62.5 mg tablet for a 45 lb dog) rather than under- or over-dosing with a single size.
What Does Clavamox Treat in Dogs?
Clavamox is FDA-approved to treat several types of bacterial infections in canines. The most common infections for which veterinarian prescribe Clavamox (amoxicillin/clavulanate potassium) are:
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- Skin infections and pyoderma (including deep and superficial cases)
- Wounds, abscesses, and cellulitis
- Periodontal (gum) and dental infections
- Soft tissue infections
Off-Label Uses of Clavamox in Dogs
Vets also prescribe Clavamox off-label meaning outside its official FDA label, but within legal veterinary practice for:
- Urinary tract infections (UTIs)
- Respiratory infections
- Bite wounds and post-surgical infections
Remember the dosage of dog Clavamox may be differed slightly from the standard skin-infection protocol, so always follow your vet’s specific instructions rather than the general chart above.
Clavamox vs. Augmentin 875/125 for Dogs
If you might think that Clavamox (amoxicillin/clavulanate potassium) and Augmentin 875/125 are used for treating same infection with the same dosage you might be worng. Some pet owners searching for amox clav 875/125 mg for dogs dosage are asking about human Augmentin tablets rather than veterinary Clavamox.
Here’s the key difference you must know before taking any decisions:
- Clavamox (veterinary) uses a 4:1 ratio of amoxicillin to clavulanate (for example, 250 mg amoxicillin to 62.5 mg clavulanate).
- Human Augmentin 875/125 uses a 7:1 ratio — 875 mg amoxicillin to 125 mg clavulanate — which is a much higher concentration per tablet.
Because of this ratio difference, you cannot substitute Augmentin 875/125 for Clavamox using the same mg/lb math without veterinary guidance.
If a vet does prescribe the human formulation (sometimes done for large dogs where it’s more cost-effective), the dose is calculated based on the amoxicillin component only, still targeting roughly 6.25–12.5 mg/lb of amoxicillin, and the tablet is often split by a compounding pharmacy for accuracy. This should always be calculated and dispensed by a vet or veterinary pharmacist — never estimated at home.
Factors that Influenced Clavamox Dosage
- Dog’s age: Puppies, depending on their weight and developing organs, may require varied doses.
- Health conditions: Liver or kidney disease can impact on the metabolism.
- Infection type: Severe types of infection may call for the higher range of the Clavamox For Dogs Dosage.
- Concurrent medications: Always let your vet know if your canine is taking other medications.
Common Side Effects of Clavamox
While generally safe, dogs may experience mild side effects, including:
- Vomiting or nausea
- Diarrhea or loose stools
- Loss of appetite
- Allergic reactions (unusual, but serious)
Warning: When in case your pet develops severe allergic reaction to the medicines like swelling, difficulty in breathing, or severe lethargy, stop the medication and contact your vet immediately.
How to Use a Clavamox Dosage Calculator for Dogs by Weight
A Clavamox Dosage calculator for dogs per pound makes it easy to calculate the proper dose of Clavamox:
- Enter the weight of your dog in pounds or kilos.
- Select the tablet strength or suspension that you have.
- Input Frequency ( Typically every 12 hours).
- The exact dose per administration can be found on the calculator.
Using an online Clavamox dosage calculator for dogs mg kg is helpful in reducing the number of mistakes and ensuring safe treatment.
FAQs
Can I give Clavamox Dosage For Dogs Without Vet Prescription?
No. Clavamox is a prescription (source of antibiotic). Only a veterinarian will be able to give you back this insight if it’s right or not and what is the appropriate dosage for your dog.
How long to give Clavamox to dog?
The length of time depends on the infection. Most courses last 7–14 days. Not to stop early even when your dog seems to be better.
Can puppies take Clavamox?
Yes but dosage should be carefully calculated depending on weight and age. Use a vet approved dosage calculator.
What if my dog misses a dose?
Give it as soon as possible and then can follow the regular schedule. Do not double the next dose.
Can Clavamox be an after food drug?
Yes. Food administration can lessen any stomach upsets.
Is there an interaction with other drugs taken?
Clavamox may interact with some drugs. Always consult your vet if your dog is on other drugs.
Final Thoughts
Calculating Clavamox dosage for dogs helps to incur the right dosage of antibiotic treatment on your dog and eliminates chances of underdosing and overdosing.
Heavy dosing is the main cause of failure in treatment and long-term results of your dog. Never begin or change any drug without consulting your doctor.
