Oh man, I feel for you dude. That's some tough stuff to go through. These doctors are absolutely useless, I've been to about 4 now and not a single one even knows what fasciola are. I have some sort of trematode.The meds are harsh, but I think for albendazole and mebendazole you should be fine. They are toxic but I've had about 2 weeks straight on albvendazole when I first got sick and it didn't do much damage.
Hey, one suggestion, go to your local grocery store and pick up a few papayas, grind the seeds each morning and drink it on an empty stomach. It works well as a detoxifyer for your body and kills parasites, although if you are too heavily infested it might not work as well.