Thanks for your advice. I hope you're wrong when you say "once a host, always a host". Has this been the case for you?
I am infested with many, ever-changing parasites. Worms are no longer the primary problem. I have no idea what the root cause of all this mess is but it's pointing to a compromisied immune system. While I don't have AIDS, the dose of nitazoxanide I took is what those with compromised immune systems take, for instance, HIV patients receive 1000 mg two times a day for 14 days for cryptosporidium. This drug is supposed to be low danger for the liver, so I just don't understand what happened.
Six years ago I had histoplasmosis which is a fungus. I've been diagnosed with Lyme and microsporidia in the past 2 years. I'm not confident that I have either of these problems.
I'm not a believer in herbs since they caused my initial worm dissemination.