Other symptoms include, weight loss, listlessness, intestinal gas or loss of appetite. Some animals may carry giardia and show no clinical signs. It is our policy to treat animals that are showing clinical symptoms of giardia. There are a variety of medications used to treat giardia. Giardiasis has proven to be frustrating to both pet owners and veterinarians because of drug resistance and the strong likelihood of reinfection.
Giardial cysts are very resistant to destruction and remain in the environment year round.