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
All of the following are vasodilators except
assistant
The correct answer is  Methyldopa is a centrally acting alpha-agonist Hydralazine, diazoxide, and nitroprusside are vasodilators. Hydralazine, diazoxide- aeriolar dilators- potassium channel openers Nitroprusside- both aeriolar and venous dilator REF.Essentials of Medical Pharmacology-kD Tripathi 8th ed.