<chemical> A direct-acting smooth muscle relaxant used to dilate blood vessels. It may cause gastrointestinal distress and tachycardia. ... Pharmacological action: vasodilator agents. ... Chemical name: Benzeneacetic acid, alpha-hydroxy-, 3,3,5-trimethylcyclohexyl ester ... (12 Dec 1998) ... 
a vasodilator, CHO, used to treat certain vascular diseases.