I had radical prostatectomy in 2007 which resulted incomplete urinary incontinence. In 2010 I had the implantation of the AMS 800 artificial sphincter and it has worked extremely well, but I have frequent trips, more than desirable, to urinate. I have been on VesiCare on and off for about 3 years at the lowest dosage and experienced constipation, even with supplements to prevent it. Recently I tried the Oxytrol patch and have found them to work very satisfactorly. Now after about 1 month of use, I find that I am having loose stools and some diarrea. How is it that one anti-cholinergic gave me constipation and another diarrea?