I have been on amitriptyline for a year. 3 months ago, I was told to increase from 20mg to 30 mg (as still hetting 5 migraines a month). However, this last week I've noticed I'm struggling weeing. Like, I have to push wee out as it won't come otherwise. I then need to go again soo after, it's like I have a pretty constant need. I know weeing issues can be a side affect, but I am wondering if others have experienced this. I'm going to call gp after the bank holiday, and also on Thursday, I have an appointment in a headache clinic due to this drug clearly not helping enough.