does vyvanse cause impotence or brain damage or parkinsons? I was suffered concussion 2.5 mos ago and i am having short term memory episodes (asked for flue shot after 5 min after it was administered). I was told if i do have brain damage we thousands of cells we do not use and you just have to learn to use the cells you have left. I am 38 I am prescribed ambien for 2 weeks then flourazepam for 2 weeks for apnea, prescribed prozac very very depressed. career is in gutter. My man part inverts when i take vyvanse and I was told that it pulls on my uretha and ive been told by ex girlfriends i am small. I havent slept more than 3 hours in a month. I quit drinking on weekends 2.5 mos ago. Do I have any chance to perform well again or have children? I can not pay at this time. but would use this service in future. I am very worried.