Amoxicillin Clavulanate Dosage for Dogs: Calculator, Chart & Safe Dosing Guide

How much amoxicillin clavulanate can I give my dog? If you are standing in your kitchen with a pill bottle and a worried look on your face, you are asking exactly the right question. Amoxicillin clavulanate. Sold under brand names like Clavamox. Is one of the most commonly prescribed antibiotics for dogs, and because the dose depends on your dog’s weight and the condition being treated, guessing is never safe.

The good news: once your vet gives you the correct dose, working out each administration is simple arithmetic. The calculator and weight chart below will walk you through it. But here is the non-negotiable part. Nothing on this page replaces your veterinarian. Dosing, frequency, and treatment length must come from the vet who examined your dog.

Amoxicillin Clavulanate Dosage Calculator for Dogs

The fastest safe way to work out a single dose is to let the math do the heavy lifting. Enter your dog’s weight below and the exact dose your veterinarian prescribed, the calculator multiplies the two and shows you the total milligrams for that administration.

Important: this tool performs arithmetic only. It does not choose a dose for your dog. The milligrams-per-pound figure must come from your veterinarian, because the right number depends on your dog’s condition, weight, and health history.

Amoxicillin Clavulanate Dosage Chart for Dogs by Weight

Use this chart to see how dosing scales with body weight. Every dose cell is a placeholder, your veterinarian fills in the verified figure for your dog’s situation. Never dose from a chart alone.

How to read the chart (mg per lb explained)

Veterinary dosing is expressed as milligrams of drug per pound (or kilogram) of body weight. That means a heavier dog needs more total milligrams than a lighter dog to reach the same concentration in the body. Your vet picks the mg-per-lb figure for the infection being treated. Commonly written as [X mg per lb. Confirm with your veterinarian] , and multiplies it by your dog’s current weight. The calculator above does exactly that multiplication for you.

Two things matter enormously here. First, weigh your dog now, not from memory, a few pounds of drift changes the math. Second, the “per administration” amount is only half the prescription; how often you repeat it through the day is the other half, and that schedule comes from your vet alone.

How much amoxicillin clavulanate for a 10 lb dog? How about a 50 lb dog?

These are two of the most searched questions on this topic, and the honest answer is: it depends on the mg-per-lb rate your vet chose. A 10 lb dog and a 50 lb dog with the same infection would get very different total milligrams. Find your dog’s weight bracket in the chart above, take the mg-per-lb figure your vet gave you, and enter both in the calculator, or simply ask your vet’s office to confirm the total before the first dose.

Small vs. large breed notes

Small dogs (under about 20 lb) are usually easiest to dose accurately with the flavored oral suspension, since liquid lets you measure fractions of a milliliter with a syringe. Rounding a tablet for a tiny dog is imprecise. Ask your vet whether the suspension is the better choice. Large and giant breeds often need a combination of tablet strengths to hit the target milligrams; your vet or pharmacist will show you the exact tablet split. Overweight dogs should be dosed on their current actual weight unless the vet specifically says otherwise, so step on the scale together before the first dose.

What Is Amoxicillin Clavulanate for Dogs?

Amoxicillin clavulanate is a combination antibiotic. Amoxicillin is a penicillin-type drug that kills bacteria by interfering with their cell walls. Clavulanate (clavulanic acid) is added because some bacteria produce an enzyme called beta-lactamase that destroys plain amoxicillin before it can work. Clavulanate blocks that enzyme, so the antibiotic survives long enough to do its job. That one-two punch is why vets reach for this combination when plain amoxicillin might not be enough.

In veterinary medicine it is most familiar under the brand name Clavamox, and it is one of the most frequently prescribed antibiotics in small-animal practice. If you are comparing it with amoxicillin dosage for dogs, the key difference is that clavulanate component: the combination covers a broader range of bacteria, including some resistant strains.

Can I give my dog amoxicillin clavulanate?

Only if your veterinarian prescribed it for your dog. This is a prescription medication, and “can I” really means two questions: is it safe for your particular dog, and is it the right drug for the problem at hand. Dogs with penicillin allergies, certain liver or kidney conditions, or on interacting medications may not be candidates. And antibiotics only help bacterial infections. They do nothing for viruses, and using them “just in case” contributes to antibiotic resistance. So the answer is: yes, when your vet says so, at the dose and schedule your vet sets.

What conditions is amoxicillin clavulanate prescribed for in dogs?

Veterinarians commonly prescribe this combination for bacterial infections where plain amoxicillin might fall short. Typical uses your vet may discuss include:

• Skin and soft-tissue infections. Hot spots, wound infections, abscesses, and bite wounds.
• Urinary tract infections, when the vet suspects or confirms a bacterial cause.
• Respiratory infections. Certain bacterial infections of the airways.
• Dental infections. Infections of the gums, tooth roots, or after dental surgery.
• Ear infections, when bacteria (rather than yeast alone) are involved.
• Post-surgical prevention. Short courses to guard against infection after some procedures.

Your vet chooses the drug based on the likely bacteria involved, sometimes after a culture and sensitivity test. If you want to understand how the plain version differs, see our augmentin dosage chart for dogs: Augmentin is the human brand name for the same drug combination, which sometimes comes up when owners wonder about using leftover human medication (spoiler: don’t, the strengths and inactive ingredients differ).

Amoxicillin clavulanate vs. plain amoxicillin: what’s the difference?

Think of plain amoxicillin as a good all-round antibiotic and the clavulanate version as the same drug wearing armor. The clavulanate ingredient neutralizes bacterial enzymes that would otherwise destroy amoxicillin, so the combination works against a wider set of bacteria. The trade-off: the combination can cause slightly more stomach upset in some dogs, and it is not automatically “stronger” for every infection. Vets choose based on the bacteria they expect. Either way, dosing, duration, and whether the clavulanate version is warranted are your vet’s call.

How to Give Amoxicillin Clavulanate to Your Dog

Giving antibiotics correctly matters almost as much as the dose itself. Give each dose at evenly spaced intervals through the day, at roughly the same times, and finish every last dose of the course. Stopping early because your dog “looks fine” is one of the most common reasons infections bounce back.

Available forms: tablet, chewable, liquid, injectable

For dogs, amoxicillin clavulanate most commonly comes as:

• Chewable tablets (e.g., Clavamox chewables). Flavored, and many dogs take them like treats.
• Regular tablets. Can be given directly or hidden in a small amount of food if your vet approves.
• Oral suspension (liquid). Mixed by the pharmacist, measured with a syringe; ideal for small dogs and precise dosing. Shake well before each use and store as directed on the label.
• Injectable. Used in clinics, not something you will administer at home.

Do not split, crush, or open tablets unless your vet or pharmacist says it is fine for that specific product. Some formulations do not divide evenly, which throws off the dose.

Amoxicillin clavulanate for dogs: with food or without?

This is one of the most asked questions about this drug, and for good reason. Amoxicillin clavulanate can be given with or without food, but giving it with a meal or a small snack is commonly recommended because food reduces the chance of stomach upset. If your dog vomits after a dose on an empty stomach, try the next one with food and tell your vet. Either way, follow the specific instructions your vet gave you. They may have a reason to prefer one approach for your dog.

Missed dose protocol

If you miss a dose, give it as soon as you remember, unless it is almost time for the next scheduled dose. In that case, skip the missed one and continue with the regular schedule. Never double up to “catch up”; a doubled dose raises the risk of side effects without helping the infection. If you have missed more than one dose, or you are unsure what to do, call your vet’s office for guidance rather than guessing.

Amoxicillin Clavulanate Side Effects in Dogs

Most dogs tolerate this antibiotic well, especially when it is given with food. When side effects do appear, they are usually mild and digestive. Knowing the difference between “watch and wait” and “call now” keeps you calm and your dog safe.

Common, usually mild side effects:

• Soft stool or mild diarrhea
• Decreased appetite for a meal or two
• Mild nausea or a single episode of vomiting
• Slight drooling after liquid doses (often just the taste)

Serious side effects. Contact your vet promptly:

• Persistent vomiting or watery diarrhea
• Bloody stool
• Skin rash, hives, or intense itching
• Facial swelling, especially around the muzzle or eyes
• Difficulty breathing, wheezing, or collapse
• Yellowing of the gums or eyes (jaundice)
• Unusual lethargy or refusal to eat for more than a day

When to call your vet immediately

Call right away, or head to an emergency clinic after hours, if you see signs of an allergic reaction: facial swelling, hives, trouble breathing, or sudden collapse. These can escalate fast. Also call promptly for relentless vomiting or diarrhea, blood in the stool, or jaundice. For mild, one-off tummy upset after a dose, note when it happened and mention it at your next check-in; your vet may adjust the timing or suggest giving doses with food.

Warnings, Contraindications & Drug Interactions

Amoxicillin clavulanate is widely used, but it is not right for every dog. Be upfront with your vet about your dog’s full health picture before starting.

Dogs that should not take it, or need extra caution:

• Dogs with a known allergy to penicillins or cephalosporins. Cross-allergy is possible.
• Dogs with significant liver disease, the clavulanate component is processed in part by the liver.
• Dogs with severe kidney disease. Dosing may need adjustment; your vet decides.
• Pregnant or nursing dogs. Use only with explicit veterinary approval.
• Very young puppies. Dosing and safety margins differ; vet guidance required.
• Dehydrated or seriously ill dogs. Tell your vet everything going on, not just the infection.

Drugs that interact with amoxicillin clavulanate

Always give your vet the complete list of everything your dog takes. Prescriptions, supplements, and over-the-counter products. Interactions your vet will consider include:

• Other antibiotics (especially bacteriostatic types like tetracyclines). They can blunt each other’s effect.
• Allopurinol. Combined use has been linked to a higher chance of skin rash.
• Probenecid. Can raise antibiotic levels in the blood.
• Certain blood thinners and immunosuppressants, your vet will weigh the risks.
• Probiotics. Not dangerous, but timing matters; ask your vet when to give them relative to the antibiotic.

When in doubt, the rule is simple: no new product starts during the antibiotic course without a quick check with your vet.

Amoxicillin Clavulanate Overdose in Dogs

Overdoses usually happen in two ways: a well-meaning owner miscalculates, or a curious dog counter-surfs the pill bottle. Amoxicillin clavulanate has a reasonably wide safety margin, but a large overdose is still an emergency. Do not assume your dog will be fine.

Signs of overdose may include:

• Repeated vomiting or severe diarrhea
• Excessive drooling
• Loss of appetite and lethargy
• Abdominal pain or bloating
• In severe cases: tremors, disorientation, or collapse

What to do first: stay calm, move any remaining medication out of reach, and note how much was taken and when. Call your veterinarian immediately, or an animal poison-control hotline (the ASPCA Animal Poison Control Center or Pet Poison Helpline; keep their number saved in your phone). Do not induce vomiting unless a professional specifically tells you to, and do not try home remedies. Bring the pill bottle or packaging with you if you head to the clinic, so the team can see the exact product and strength. To prevent repeats, store all medication in a closed cabinet your dog cannot open. Dogs are remarkably good at chewing through “child-resistant” caps.

FAQs

How much Amoxicillin Clavulanate can I give my dog?

Dosing is weight-based and varies by condition, so there is no one-size number. Use the dosage chart and calculator in this post as a starting reference to understand the math, then confirm the exact milligrams and schedule with your veterinarian before giving Amoxicillin Clavulanate to your dog.

Is Amoxicillin Clavulanate safe for dogs?

It is one of the most commonly prescribed antibiotics in veterinary medicine, and most dogs tolerate it well. That said, safety depends on your dog’s health, age, allergies, and other medications. Dogs with penicillin allergies or liver disease need alternatives. Never start it without veterinary guidance.

How long does Amoxicillin Clavulanate take to work in dogs?

Onset varies by formulation and the condition being treated. Many owners notice improvement within a couple of days, but the full course must still be finished. Your vet can tell you what improvement timeline to expect and when to follow up if you see no change.

What are the side effects of Amoxicillin Clavulanate in dogs?

The most common effects are mild and digestive: soft stool, a skipped meal, or brief nausea. Watch for the serious signs listed in the side-effects section above, and contact your vet right away for persistent vomiting, facial swelling, hives, breathing changes, or collapse.

What should I do if my dog gets too much Amoxicillin Clavulanate?

Treat it as an emergency. Call your veterinarian or an animal poison-control hotline immediately, note how much was taken and when, and do not try home remedies or induce vomiting unless a professional directs you to. Bring the packaging if you go to the clinic.

Can I give my dog Amoxicillin Clavulanate with food?

Yes. It can be given with or without food, but with food is commonly recommended because it reduces stomach upset. If your dog vomits a dose given on an empty stomach, try the next one with a meal and let your vet know.

Can puppies or pregnant dogs take Amoxicillin Clavulanate?

Use in puppies, pregnant, or nursing dogs needs explicit veterinary approval. Dosing and safety margins can differ sharply from healthy adult dogs. Your vet will weigh the benefits against the risks for your dog’s specific situation.

How often can I give Amoxicillin Clavulanate to my dog?

Frequency is set by your vet based on the condition being treated. Doses are typically spaced evenly through the day. Do not repeat, skip, or double doses without checking the missed-dose guidance and your vet’s instructions.

Final Thoughts

Amoxicillin clavulanate is a workhorse antibiotic for good reason: the clavulanate component extends amoxicillin’s reach to bacteria that would otherwise resist it, and most dogs sail through a course with nothing worse than a soft stool or two. Your part of the bargain is simple. Get the exact dose and schedule from your vet, give every dose on time and with food if recommended, finish the full course, and call promptly if anything looks off.

Want to compare options? Read our guides on amoxicillin dosage for dogs and the augmentin dosage chart for dogs, or explore the related antibiotic guides above. And when in doubt about anything. Dose, timing, side effects, your vet’s phone number beats any article, including this one.

Written by The Paw Collar Editorial Team.