Sorry for the late Response.
HW worked pretty good for my Kids. My 4 year old just did his second round. HW told me, the Kids can take it when I see fit, they don´t need to wait 90 days, as there is no wormwood. His School sent out a notice that a pinworm outbreak has occured, so he is taking it again. My 2-year old had no Problem, only at day 15 or so, he developed a very minor fever and on that day he also did not have bowel movement. The next day he had very stinky stool with White bits and pieces in it. I think it was some parasite he killed and the Toxins made him have a fever for a day. When he pooped, the fever was gone within an hour. That was the only thing that I can report on how they reacted. My four year old was fine all the time.