Side effects can be expected to a certain degree, especially when severely poisoned. However, putting up with side effects to the extent that they cause severe and often psychiatric and/or other distressing/frightening symptoms is usually a sign of either redistribution and/or too high a dose. Not wise. The mercury from being bounced around by improper detox/chelation can enter more sensitive areas (brain being one). Too high a dose can simply be overwhelming to the body which may not be able to handle it. And often all that happens is, the person can then get a backfire effect because the body is unable to keep up.

So yes, a person can make themselves worse. Even if one does chelation by a safe/logical protocol - taking too much can still cause problems. It is not necesary to put up with any side effects that go beyond a person's tolerance.

Both dosing and timing are highly important to reduce these risks and actually get the mercury OUT, rather than bounce it around.