Oxybutynin
"This medication has helped me so much.

Over the last few years my sweating became really excessive on my face and neck. My neck just gushed swest. All areas of my life were affected, and I was humiliated on a daily basis. 

I  heard about an oral medication for hyperhidrosis, so I went online to do some research and I learned about oxybutynin, then went to the doctor who gave me a prescription for 5mg 2x daily. I think it took 2 or 3 days to see a difference, and it was a big difference. I was literally overjoyed. I don't mind the side effects (dry mouth and drowsiness), but for me the oxybutynin does not take the sweating completely away. I'm now in 10 mg 2x daily. I also notice it stops working about halfway through my day."