Vonce,
I found that if I overdid it the herx was unbearable. 2 tbsp. seemed to be a 
good amount for me.  The time it took, in the long run, was well worth it.  If 
I had to do it again, I wouldn't have waited so long. I would have taken the 
chance immediately.  The way I look at it, it couldn't have been worse than 
the way I was feeling.
Nick