Google Diatomaceous Earth - nice alternative
Personally I've tried a few
parasite cleanse things-
Clarkia , valerian, tansy, olive leaf extract- they're all good and strong, though I have a hard time with the dieoff symptoms while using them.
I bough diatomaceous earth recently and have been starting with the 1/2 tsp/day in water dose, it's nice and gentle.
It can be rubbed on the skin/hair externally too.
Really cheap!
Thought I'd mention it, since you're having issues externally (with those guys on the skin).
The DE really does up energy, so it's worth a look. :)
I'm sorry to hear about how scary it is finding these wigglythings on and about your body- it's not easy to find people to talk to about the things that (they, in general those around you) haven't experienced.
May you find peace as you step forewards, and blessing in the new year (especially in Jesus! :) )