i have been prescribed amitryptiline, not for depression, but for improving issues with urination....the doctor felt i would get up fewer times in the night to pee if i took this drug. is this a common purpose for amitryptiline prescription? when i look up the reasons for prescribing, it only mentions depression. i am having problems getting an erection recently, even when using ED drug....i feel i should quit the amitryptiline usage to combat this very vexing issue. your thoughts?