<unk> (injection) is an beta-adrenergic blocker, Nonselective that is FDA approved for the treatment of cardiac arrhythmias.   Common adverse reactions include diarrhea, vomiting, dizziness , sleep disorder, fatigue.
Propranolol 
Bupranolol
Methazolamide
Brotizolam
Penbutolol
Clopamide
Clonidine
Metipranolol