Treatment of giardiasis in adult Greyhounds, using ipronidazole-medicated water

Two of 3 adult Greyhounds with clinical signs of giardiasis were treated by the addition of ipronidazole hydrochloride to their water supply (126 mg/L) for 7 days. Within 15 hours, the dogs had improved clinically, and large numbers of degenerating Giardia cysts were passed. After 54 hours, cyst shedding had ceased. The nontreated control dog continued to shed Giardia cysts. During an additional 7 days, the dogs were treated with ipronidazole-medicated water (378 mg/L) and remained clinically normal.