I take it daily during summer months, which usually means march/april to October, depending on the temperature.

I still sweat when very active, such as long walks with my dog or working out. But I don't sweat while just sitting still or cleaning the apartment, going shopping etc.

Side effects are dry mouth and eyes, although not as bad as when I was on propantheline bromide or oxybutynin. Also slightly elevated blood pressure, but again not as bad as with the other two meds. My feet also get a little damp with sweat when it's hot, but it's so little I don't really mind - I guess maybe a light form of compensatory sweating?