I suppose the Weston A. Price Foundation (westonprice.org) is one starting point. Also I guess I need to read up on herbal remedies which I know there is some info about out there in book format. This article was somewhat helpful: https://drjockers.com/germ-theory/ (mainly for the links to other thinkers and ideas, not for whatever Dr Jockers is shilling)
Discussion
Dr. Clark is one of the OGs in the space. She's passed away I believe but her son still runs the store.
Herbs come with a booklet with her protocols. I believe they are the only one using freeze dried young (green) black walnut, which is supposed to drastically improve efficacy.
I think using this to cleanse the GI tract is a great starting project.
https://naturalhealthsupply.com/shop/herbal-cleanses/herbal-parasite-cleanse/