Pharmacology General d517cec1 Drug not used in prinzmetal angina is? A Propranolol B Propranolol C Nitritesrites D Isosorbide dinitrate High-Yield Explanation Ans. is 'a' i.e., Propranolol o P-blocker's are contraindicated because they cause constriction of coronary aery due to unopposed a mediated vasoconstriction.