I took Vyvanse for a few months and then stopped, I had lost my prescription and couldn t get a refill. I had noticed that while on Vyvanse, I was not urinating as much as usual and was prone to constipation. About 2 or 3 weeks after stopping Vyvanse, I was suddenly urinating as I had before. I had a few days where I couldn t believe how much I was going. I am 56 yr old female and concerned about this, possible effects on my health. The Vyvanse didn t seem to work for my ADD anyway. My Dr. has been reluctant to try other things. I was on Adderall before the Vyvanse and it did not seem to help with ADD either. I had bad racing thoughts with Adderall and stopped taking it.