I'm just starting and did 3 days on and felt okay then went off (thought I would do 3 days on/ 4 days off). Feel fine on my days on, felt GROSS on my first day off so I started up again after reading longer periods were okay. Felt better being back on.
I think perhaps the mercury gets stirred up and as long as you're taking the DMSA/ALA it is getting moved out of the body, then when you stop it sits there?