high blood pressure
"I have been on 2.5mg of Bystolic for 3 months now.  I found this forum searching to see if others feel tired and sleepy from this drug.  It worked for me right away but now I am ready to head to bed at 9:00 and never have a problem falling asleep.  If I am not active during the day I feel tired.  It's lowered my heart rate while running and my 8:30- 8:45 per minute miles are now 9:30-10:00.  My cardiologist says that if it becomes unbearable he can find an alternative.  Not sure what I am going to do as the drug is doing it's job with my BP."