Phentolamine, sold under the brand name Regitine among others, is a reversible nonselective α-adrenergic antagonist.
4 Adverse effects
6 External links
Its primary action is vasodilation due to α1 blockade.
Non-selective α-blockers can cause a much more pronounced reflex tachycardia than the selective α1 blockers. Like the selective α1 blocker...