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Metronidazole for Dogs & Cats

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Metronidazole 250 mg, 100 Tablets
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Metronidazole 500 mg, 500 Tablets
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Metronidazole 250 mg, 30 Tablets
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Metronidazole, 250 mg, 500 Tablets
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Antiprotozoal Antibiotics for Dogs and Cats

Metronidazole is an antibiotic for dogs and cats that also works as an antiprotozoal medication. Metronidazole pet meds are used to treat giardia in dogs and cats and other bacterial infections.

Metronidazole is an antibiotic and antiprotozoal agent with anti-inflammatory properties. Among other uses, this product treats infections caused by Giardia, periodontal disease, colitis, inflammatory bowel disease, nonspecific diarrhea disorders, and tetanus. Metronidazole is primarily used in cats and dogs.

Benefits of Metronidazole:

  • Treats a number of infections, including those caused by Giardia, Entamoeba, Trichomonas and Balantidium
  • Treats inflammatory bowel disease (IBD)
  • Treats diarrhea of unknown or minor causes
  • Soothes intestinal inflammations
  • Penetrates to the bone, making it useful for dental infections
  • Treats colitis caused by other antibiotics
  • Used to treat tetanus
  • Eliminates overgrowth of intestinal bacteria accompanying pancreatic insufficiency
  • Treats some complications of liver disease
  • Easily administered oral tablet form

For animal use only. Do not allow children to handle or administer Metronidazole.

Read all package directions and warnings.

Use exactly as prescribed by your veterinarian.


  1. Give cats 5 to 23 mg per pound of body weight once or twice per day as prescribed.
  2. Give dogs 3 to 23 mg per pound of body weight 1 to 4 times per day as prescribed.
  3. Administer tablets directly by hand. Tablets may be crushed for cats, but they often find this method unpalatable.
  4. Do not exceed a dose of 50 to 65 mg per 2.2 lbs. of body weight.
  5. Watch to ensure your pet consumes the full dose.

Frequency of Use:

Metronidazole is typically given 1 to 2 times per day to cats and 1 to 4 times per day to dogs. Give the entire prescribed regimen; signs and symptoms may clear up before the infection is completely eliminated.

If you miss a dose, administer it as soon as you remember it. Skip the dose if it is almost time for the next one. Do not give a double dose of this medication.


Keep out of reach of children and animals.

Store Metronidazole at room temperature, protected from heat and moisture.

It is a violation of Federal Law to use this product in a manner inconsistent with its labeling.

Metronidazole is an anti-infective that is particularly effective against anaerobic microorganisms. It can penetrate to the bone and it possesses anti-inflammatory properties. This antibiotic works to treat a wide variety of infections.

Active Ingredients: Metronidazole, 250 mg or 500 mg


Keep this product out of reach of children and animals. Do not use or store in or near open flame or heat.

Only use Metronidazole in cats and dogs.

Follow your veterinarian's prescription.

CAUTION: Do not use in pregnant or lactating animals. Not for use in young puppies and kittens.

Tell your veterinarian if your pet has anemia, epilepsy, a nerve disorder, or renal or hepatic disease.

Not for use in animals with an allergy to metronidazole. Signs of an allergic reaction may include diarrhea, vomiting, itching, facial swelling, rash, hives, difficulty breathing, seizures, or coma. An allergic reaction requires immediate veterinary attention.

The most common side effect is stomach upset. Vomiting, pawing at the mouth, drooling, decreased appetite, and other side effects may also occur. 

Severe side effects may result from high doses. Some include lethargy, weakness, CNS depression, seizures, and ataxia.

If your pet has bloody or watery diarrhea, contact your veterinarian.

If you know of or suspect an overdose, seek emergency veterinary treatment. A variety of gastrointestinal and neurological symptoms may result.

Metronidazole can interact with anticoagulants and other drugs and supplements. Consult your veterinarian before using this product concurrently with any other therapies.