I ran syntherol miself, 1,2,3 ml/ going up every 10 days + the maintenance and it worked awesome. For me a gain of 1.5 inch was all I aimed for and achieved. Pain and discomfort, on a scale from 1 to 10 it was a 6 in the beginning and a 3-4 towards the end. And by the way, back to the topic if...