Look into andy cutlers protocol of DSMA chelation or DMSA + ALA.
Taking it non stop would stress the body out big time and you would make youself worse, you need to give your liver kidneys ect a break. Definately buy the book it will help you out alot.
The general rule for DMSA only or DMSA + ALA, is how ever many days on atleast that many days off to give your body a break. So at first its logical to do 3/4 days on 3/4 days off. If you respond well to that you may stretch it to 5 days on 5 days ect. If you didnt take a break you would become even more ill.
Before the book arrives i would suggest reading here