If I dont do enemas whilst taking humaworm, I too have terrible die off.
I too would recommend enemas and a zapper if you have one, I got the $10 one and after I had used for the first week, I was so impressed I bought a slightly more expensive one.
I would also advise you to get the Humanatea too, even if you dont take it straight away it will really help with clearing out the toxins when you finish Humaworm.