TRICLABENDAZOLE is the same thing the vet uses to get rid of worms in cows and sheep and dogs and cats. There is a treatment made with Diatomaceaous Earth that will kill these things too. They are cold blooded invertebrates and should be fairly easy to eradicate, IF YOU KNOW YOU HAVE THEM.
The length of time that they have been in the host would have a lot to do with how bad things have progressed. My dad would tell you to swallow a (pre 1974) penny every day for a week and you will be fine. (Not the same penny.) Copper will kill most guy parasites.
(Im just a FReeper who knows some stuff about bugs.)