system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Which of the following beta blocker has additional vasodilator action?
assistant
The correct answer is  Carvedilol has additional vasodilatory action due to its alpha blocking propey. These are called third generation beta blockers. Third-Generation Beta-Blockers - a blockade (labetalol, carvedilol), - b2 agonism (celiprolol, caeolol, bopindolol), - Release of NO (nebivolol, nipradilol), - Opening of K+ channels (tilisolol) - Inhibition of Ca2+ channels (carvedilol, bevantolol, betaxolol).