If you're poisoned and you're removing toxins, there will be side effects. Either way. If the product does what it says and removes mercury, then it will produce symptoms.

I know of nothing that moves mercury and doesn't produce side effects at the sametime. If it does, it may not be doing much to help.

Though there are ways of reducing side effects to a more toleable level, like Andrew Hall Cutler's protocol for example. Which is a well thought out protocol that keeps the blood levels of the chelating agent even in the blood stream by taking it every 3-4 hours around the clock. The movement of mercury then becomes more stable, rather than unpredictable and up and down.

That is really the only chelating protocol I could tolerate enough. Everything else was either ineffective, or produced too many horrible symptoms (and risky ones too). His was not easy, but it was sane.

I recommend the Cutler protocol for anybody. It's up to you should you wish to try others, but I can't comment on their safety or effectiveness having not tried bio chelate and not hearing enough about it.