Hi Twinkle!
ND's are like LLMD's when it comes to why they have their patients do certain things - it has a lot to do with their beliefs on how best to attack the infection(s).
I believe that some ND's think that by pulsing like that, it draws out more of the protozoas- while taking the artiminisin some will kind of 'retreat' until it's safe to come out again, while others are 'caught' outside of any kind of protection that they can find in the body. When the herb is stopped, they believe it's safe and more will come out - so that's when that person would start the herb again - 'catching' more protozoa outside of any protection & so on.
At least that's what I understood!
Once again, don't rely only on the blood tests to determine if you have one of these infections!! We should also look at our symptoms. All of the strains of each infection have yet to be discovered, and even fewer have a test designed to detect them - and that's without getting into any of the stuff about
how unreliable the tests that are out there are!