Metronidazole is an antibiotic prescribed by veterinarians for dogs to treat diarrhea, inflammation of the large intestine, and other bacterial and parasitic infections such as Giardia. Some also refer to it by the brand name Flagyl.
Giardia is a parasite that causes an infection known as giardiasis in the gastrointestinal tracts of dogs. It is transmitted through the ingestion of microscopic cysts, offspring of the parasite, found in the feces of infected animals. Here is what you should know.