high blood pressure
"34 y/o female on HBP meds since severe bacterial infection wiped out 3/4 of kidney function 5 years ago. Had been on 100mg/day of Metoprolol and it caused mind-numbing fatigue and fogginess, and frankly I realize now I was over-medicated. Doc switched me to 5mg/day Bystolic and I felt like a new woman overnight! No fatigue and only noticeable side effect (like someone else mentioned) was that it knocked back my libido some, which wasn't a terrible thing and isn't affecting me that much. I can get through a work day without taking a nap at lunch and actually have a life after hours now. I'm glad I took a chance on this med!"