Paralixer is a parasite cleanser made for humans but often used for pets, especially cats because it is tasteless, and they will willingly drink it in their water. I had my local health store order it. So far so good. My cat pucked the first day, but like he would with a hairball, then was visibly better than he had been for the few days before. He was even chasing his tail, and he is 10 years old!