medically the parasite drugs have little effect, the WHO suggested the USA should chemo the populations to stop the spread of sheep flukes. I seen sheep flukes in just about everyones liver flush, the dewormer removed them extremely easy, but chemo can ONLY kill adults and never the eggs, etc. and does more than enough damage to the entire body while the herbs are nothing more than natural foods doing no harm.
In the USA you will find less than .005% of the MD and hospitals that would EVER admit a human had a worm, worms are their bread and butter and the very last thing they want is for you to be worm-free.