Re: Chelating from Mercury
Cilantro has worse side effects because it's very effective at removing mercury (too effective for some). The more effective it is, the more the side effects will be. You may not feel the effects unless you take it in frequent doses. Now I take it with every meal and before I go to bed. It needs to be combined with Chlorella because cilantro doesn't effectively remove the mercury by itself. The Chlorella should be taken a half hour before meals (and I also take it before going to bed too). I use cilantro for 1 or 2 weeks and then take a break for a week or so, and I also continue to take Chlorella for a day or two after finishing a round of cilantro because it stops the symptoms of redistribution.
The side effects are worse, but the improvement I've felt in a few months of doing it have been obvious and much greater than the improvements I felt during 2 years of using DMSA. It should be noted that my friend couldn't continue with cilantro and chlorella because the side effects were too much for her. Perhaps no two people will have the exact same experience with any chelator.
It also should be noted that there are people who question the safety of this method. I haven't had any major problems though.
If what your doctor is suggesting seems to be working, then I would continue. It would likely be months before you know for sure.