Couldn't that also have been a detox crisis? Not saying it wasn't an OD, just speculating.
Personally I've taken 800mcg of SeM daily for many months now with only 2 occasions of negative symptoms that were very short lived. I attribute those cases to mercury detox. One was severe shakes/convulsions, and severe chills but no other signs of being sick, and one was severe nausea in the very beginning.
The hair in the areas of my scalp that suffer from male pattern baldness has dramatically thinned over the last few months as well. The thinning occured at a much faster rate than it has been for the previous 6 years. I wonder if this could be mercury detox as well?
However, I take 300mg of Iodine daily. That's 125 or so drops of 2 percent Lugol's.