I didn’t get insomnia from Myrbetriq. I’ve had chronic insomnia since age four anyway - ADHD+OCD+anxiety kept me from sleeping well for most of my life, and now I have nocturia with spasms on top of the racing thoughts in the brain, so I only get a few hours of sleep total per night now. So maybe I wouldn’t even have noticed if Myrbetriq makes it worse! I do know stimulating antidepressants like Strattera, Wellbutrin, and Cymbalta contribute to my insomnia.