high blood pressure
"I am a 43 year old, female, 5'7", 130.  Been on Bystolic for about a month.  BP went from 160/113 down to 93/58 in about 2 hours in the doctors office.  Went to doctor due to dizziness and ended up with high blood pressure.  Naggy little headache, but I also had oral surgery in the last month, so not sure which one it could be.  I walk everyday for 70  minutes 14 miles.  No side effects so far."