Not exactly "whole forum" named like that LOL , but one that starts with, lets say, "osteopathic ", or "holistic" etc. I am sure you did not find this forum by Googling "ivermectin" or "parasite" ?!
This is not a forum per se , but looks pretty legit link that talks about cleansing : https://www.verywellhealth.com/natural-remedies-for-intestinal-parasites-88232