"Trimethaphan is a ganglionic blocking agent prevents stimulation of postsynaptic receptors by competing with acetylcholine for these receptor sites. Additional effects may include direct peripheral vasodilation and release of histamine. Trimethaphan's hypotensive effect is due to reduction in sympathetic tone and vasodilation, and is primarily postural."@en . . . . . . . . . . "Humans and other mammals"@en . . . . . . "Trimetaphanum"@en . . . . . . . . . . . . . . . . . . . " "@en . . . "approved"@en . "Trimetaphan"@en . "For the controlled reduction of blood pressure during surgery and in the treatment of hypertensive emergencies."@en . "7187-66-8"@en . . "Thimethaphan"@en . "Trimethaphan"@en . . . "A nicotinic antagonist that has been used as a ganglionic blocker in hypertension, as an adjunct to anesthesia, and to induce hypotension during surgery. [PubChem]"@en . . . "Trimethaphan"@en .