<unk>  is a vasodilator and alpha-adrenergic blocker that is FDA approved for the {{{indicationType}}} of reversal of the soft-tissue anesthesia.   Common adverse reactions include injection site pain, diarrhea, and nasal congestion.
Phentolamine
Phenylephrine 
Methylergonovine 
Tramazoline
Penbutolol
Clonidine
Prazosin
Clopamide