Side Effects and Warnings
As with many antibiotics for cats, dogs, and horses, some side effects may occur. When using Metronidazole for dogs and cats, watch for neurologastro-intestinal disorder, lethargy, weakness, neutropenias, hepatoxicity, hematuria, anorexia, nausea, vomiting, and diarrhea. Though not common, serious side effects may occur, such as low white blood cell count, liver failure, and blood in the urine, or dark urine. Long-term use or overdose may cause neurologic symptoms as well. Metronidazole has also been known to cause birth defects, and should not be used by pregnant mothers.
Some medications and antibiotics will interact with Metronidazole for dogs and cats. Do not combine with any of the following medications: Cimetidine (Tagamet), Phenytoin (Dilantin), Phenobarbital, or Warfarin (Coumadin). Other drugs may also affect Metronidazole for dogs and cats, so be sure to consult your veterinarian before starting this medication.
For additional information on using Metronidazole for dogs, cats, or horses, talk to your veterinarian or consult with one of our pet care specialists at 1-800-844-1427.
This information is for informational purposes only and is not meant as a substitute for the professional advice of, or diagnosis or treatment by, your veterinarian. Always seek the advice of your veterinarian or other qualified professional with any questions you may have regarding a medical condition. Never disregard or delay seeking professional advice due to what you may have read on our website. Our medications are FDA approved and/or EPA regulated when and as required by law.