I have had the sensation of full/blocked ears yes. also with candida too. Lots of symptoms.

If you've had this with mercury poisoning, then that is obviously what is causing this. So anytime you detox/chelate, you may get a return or exacerbation of existing symptoms or ones you have had previously with mercury. This can happen during healing/detox of any kind.

Chelation should, over time, begin to clear such distressing symptoms. No matter what you use, anything that mobilises/chelates mercury will often cause an exaggeration of already existing symptoms. However, they should not be beyond tolerance. When it goes to the point of being intolerable, STOP. And at the very least, re-evaluate. Some may need to lessen the dose and make sure they are taking it correctly.

My experience has been chelation taken the right way, causes detox symptoms, but as long as I keep the dose reasonable and the frequency right, I can usually handle them ok.

When I use things randomly, that's when I got into big big trouble and often for long after stopping.

It is not the chelator that is the problem. It is the mercury that causes such symptoms. Chelation can make things feel worse, but if done right, it should not be horrendous. If done incorrectly? Then yes, things can get MUCH worse and it can be risky.

No matter what product you use for mercury, whatever moves it around will usually have risks. This is why I have found Cutler the most reliable because he understands the way in which mercury works and what happens when it's moved randomly, as opposed to being moved more safely.