@LukeAlmighty @CatLord I think this might be a bit overly cautious. There is of course always a chance of the worst outcome happening, but as a whole the treatment is much worse than the symptoms in the vast majority of cases.

Like when I was a kid I picked up stomach worms from contaminated river water (with the rest of my scout troop), my lovely and well meaning parents rushed me to the ER when they heard of this and I had a full scan in that terrifying tube scanning machine, they found a tiny worm patch, about the size of a grain of rice and identified the eggs in my "samples".
I could either take a tablet every morning, only use one quarantined toilet and shower for 30 days and ate a special diet.
Or I could take a measured dose of antibiotic/pesticide which would 100% chance clean me out.
Naturally my parents choose the latter.

From about mid October to January, I was the sickest I have ever been in my life, worse than Covid, worse than recovering from a car crash and having a portion of my intestine end to end sewin back together. I was skeletally thin, my hair as a 12-14 year old boy became straw like and brittle. Worst of all my poor parents were devastated, they burned thousands they didn't have on Specialists and Doctors.

The strangest thing off all, the initial dose of anti-worm meds were at the lowest agreed dosage, after testing for allergies to the active ingredients, the dose you could give a 1 year old. But the effects of a low dose for someone carrying stomach worms at my age, with my condition were not factored in.

TL;DR: Medicine ought not be/yet is ; a gamble. It's serious business. I would have suffered less if a friggen worm caused a blood clot in my innards. And I cured it by drinking tobacco tea.