Yes I've heard dodgy things about Colloidal Silver . Though I've also heard if you make it yourself this reduces, eliminate these probs but you might not want to take the risk!
Don't know whether these websites will be useful to you...they may be slightly biased though!
What about rife, or thymus extract to boost your immune system, or kombucha?
Or even urine therapy?! Though if you have confirmation you have merc and start to chelate it's obviously not advisable!
Yes the chicken and egg thing...which came first the infection or the metal? Same position as JV and probably myself.