Get a zapper and do Dr. Clark's deparasiting protocol. Her book is a free download here in the Image Gallery . That's all I ever really needed to be rid of them. Often they carry disease, so if you feel worse afterwards, it's because they released their infection into you. Here's what I use for that.
It's a good sign if you feel worse--means you killed the parasites (zapping is entirely safe for anyone, kids included, from my expearence of 15 years, despite the lies told by the disinformation agents here). Now, just kill off their infections and you and your kids will feel 100% better.