Definition of "phentolamine" []

• An adrenergic blocking agent, C17H19N3O, used especially in the diagnosis and treatment of pheochromocytoma. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Conventional therapy for hypertensive crisis should be employed. 5 A rapid short-acting parenteral alpha-adrenergic blocker, such as phentolamine, or vasodilators, such as nitroprusside, are recommended."
• "The LORD GOD has given me seven steps to isolate the active ingredient, which is soft and metallic in nature and has a carbon- uranium-sulfur-classified-phentolamine configuration or structure."
• "Since the mid-1980s, thousands of men have found relief from the condition by injecting themselves with one of three drugs: papavarine, prostaglandin E1 and phentolamine."