Amoxicilin Clavulanate for Dogs and Cats: Uses, Dosage and Side Effects

Amoxicillin Clavulanate for dogs and cats is a combination antibiotic containing two active ingredients: Amoxicillin, a broad-spectrum penicillin-type antibiotic, and Clavulanic acid, a beta-lactamase inhibitor (a compound that blocks the enzymes some bacteria produce to destroy antibiotics).

Amoxicillin Clavulanate for dogs works by destroying bacterial cell walls and preventing bacterial growth.

Amoxicillin kills susceptible bacteria, while clavulanic acid blocks enzymes called beta-lactamases that some bacteria produce to resist antibiotics.

This combination broadens the medication's effectiveness and helps treat infections that might not respond to amoxicillin alone.

Amoxicillin clavulanate works similarly in cats by eliminating susceptible bacteria and controlling infections.

Because cats can quickly hide signs of illness, regular monitoring during treatment is important.

The standard Amoxicillin-Clavulanate dosage for dogs is 6.25 mg per pound (13.75 mg/kg) of body weight, given orally twice daily (every 12 hours). This reflects the combined amoxicillin and clavulanate content. Treatment duration depends on the type and severity of infection:

Amoxicillin Clavulanate is generally considered safe for use in puppies when prescribed by a vet. The dose is still calculated based on body weight. Because puppies have a developing digestive system, mild loose stools are more common.

The 62.5 mg tablets (which contain 50 mg Amoxicillin and 12.5 mg Clavulanic acid) are specifically designed for small dogs, making accurate dosing easier for lighter animals. Liquid suspension can also be used if tablet administration is difficult.

Medium dogs are typically dosed using the 125 mg or 250 mg tablet sizes. Treatment for skin infections runs 5 to 7 days, while deeper or more resistant infections may need up to 21 days of twice-daily dosing. Dog diagnostics, such as a follow-up skin assessment or urine culture, may be recommended after longer courses to confirm the infection has cleared.

Large breeds may require 250 mg or 375 mg tablets, or a combination of both, to reach the correct dose of 13.75 mg/kg twice daily.

The Amoxicillin Clavulanate dosage for cats is 62.5 mg (one small tablet) per cat, given twice daily, or approximately 13.75 mg/kg twice daily for cats of varying body weights.

Giving the medication with a small amount of wet food improves palatability and reduces the risk of digestive upset. Never stop the course early, as incomplete treatment can allow infection to persist or bacterial resistance to develop.

Amoxicillin Clavulanate can be used in kittens under veterinary supervision. If a kitten stops eating entirely, contact a cat doctor promptly, as complete loss of appetite in kittens can quickly become serious.

Most side effects involve mild digestive upset and resolve on their own during the course of treatment.

Possible side effects include vomiting, diarrhoea, reduced appetite, mild lethargy, excessive salivation, and temporary digestive upset.

These symptoms are often mild and temporary.

Vomiting is the most likely effect of a mild overdose. Large overdoses of Amoxicillin Clavulanate can cause more serious problems, including damage to the nervous system and liver. Signs of significant overdose include repeated vomiting and diarrhoea, excessive drooling, poor coordination, tremors, or seizures.

Contact the nearest dog emergency care facility immediately if an overdose is suspected, particularly if the dog has consumed multiple chewable tablets at once.

Cats that receive too much Amoxicillin Clavulanate may develop persistent vomiting, drooling, loss of coordination, and signs of nervous system involvement, such as tremors. In serious overdoses, liver and kidney function can be affected.

Toxo Mox (Amoxicillin Clavulanate) for dogs and cats is a widely used and effective antibiotic for managing a broad range of bacterial infections. The combination of Amoxicillin and Clavulanic acid makes it effective against bacteria that would otherwise be resistant to Amoxicillin alone.