I have always been a very heavy sweater, ever since high school. I was always able to disguise it until this past summer, when I started taking salsa lessons. I would wear two t-shirts under my polo shirts and still come out soaking. It was getting to the point that I didn't want these hot young women putting their arms around me, which was the whole reason I was taking the classes.
Then I went on a message board for people who sweat heavily -- lol, there's a message board for everything these days -- and learned about a drug called oxybutynin. One pill a few hours before class will cut my sweating by about 25%. Two will cut it in half. Three and I hardly sweat at all. The cool thing is I dodn't have to take the pills on days I'm not taking class.
I got 500 tabs from canada for $50, including s/h.