Metronidazole (Antibiotic/ Antiprotozoal)

Metronidazole (Antibiotic/ Antiprotozoal) is a widely prescribed but off-label antibiotic for Giardia, bacterial infections, and inflammatory diarrhea in dogs. Though not FDA-approved for veterinary use, it is commonly used for short-term GI issues. Long-term use is debated due to gut microbiome disruption, antibiotic resistance, and potential neurological side effects. Available only by veterinary prescription.