AntibioticPrescription RequiredDogCat

Metronidazole (Flagyl)

Metronidazole

Drug Class

Antibiotic

Available Forms

Oral tablet, Oral suspension, Injectable

Approved For

DogCat

Dosage Guide

Dogs: 10-25 mg/kg PO twice daily. Cats: 10-15 mg/kg PO twice daily. Duration depends on condition (typically 5-10 days).

This is a general reference only. Always follow your veterinarian's prescribed dosage for your specific pet.

Side Effects

•GI upset (vomiting, diarrhea, decreased appetite)
•Lethargy
•Neurological signs at high doses (ataxia, nystagmus, seizures)
•Metallic taste (may cause drooling)

Important Warnings

!Neurotoxic at high doses or with prolonged use — stop immediately if neurological signs appear
!Very bitter taste — use compounded formulation for cats if needed
!May be carcinogenic with long-term use (based on rodent studies)
!Use with caution in pregnant animals

Contraindications

Do not use this medication in the following situations:

✕Known hypersensitivity to metronidazole
✕Severe hepatic impairment

Medical Disclaimer

This medication guide is for informational purposes only. Always consult a licensed veterinarian before administering any medication to your pet. Dosages vary based on weight, age, health status, and concurrent medications. Never give human medications to pets without veterinary approval — many common human drugs are toxic or fatal to animals.