Thanks slowmo,
It sounds like that would make a person somewhat sick.
I once got arrested for doing speed. I never do speed, but these cops around here think that if you're awake late at night and you're nervous, then you're on speed. Well, it is next to impossible for me to urinate when someone is watching. So, while the cops were getting aggravated because I couldn't go, I was drinking lots of water over a period of a couple of hours. I finally managed to trickle out just a little bit. Then when that was over there was still processing to do. It was during the processing that I asked the cop to hurry up, because I had to go very badly. He made me wait and when I was finally put into the holding cell I went like a race horse. My bladder hurt for three days after that. So, I can imagine that drinking the surgel along with four liters of water (Gatorade) isn't going to tickle. I bet I'd wet my pants trying to hold it while driving to the test facility, etc.
I suppose a person could take a whole bunch of niacin, but that sounds really painful.