Question: What generic medication is a non-selective betablocker used to treat congestive heart failure?  
Sentence (from "Beta-3 adrenergic antagonist"): A Beta-3 adrenergic antagonist (β-adrenoceptor antagonist) is an adrenergic antagonist which blocks the Beta-3 adrenergic receptors of cells, with either high specificity (an antagonist which is selective for β adrenoceptors) like L-748,328, L-748,337 and SR 59,230A or non-specifically (an antagonist for β and for β or β adrenoceptors) like the non-selective betablocker Carvedilol.
Relevant evidence: Yes