My sister had a bad case of parasites - several tape worms and alot of other kinds. I'm sorry you are having such a hard time getting rid of them but you have not tried every thing that is out there.
It takes 3 to 6 boxes of ParaCleanse by Natures Sushine Products. Each box has 20 packets of 6 capsules each, one packet is taken in the morning and one at night. It is made of Chinese Herbs and it kills many various types of parasites, along with candidia. You wait 10 days between boxes. This worked for my sister along with juice fasting and enemas. (It is not necessary to be fasting - but she could see what she was killing)
Perscription medication kills only one specific kind of parasite, and has side effects. Please don't promote it in this forum - there's a different forum for that. Herbal combinations kill all kinds.