text: <unk>  is a phosphodiesterase inhibitor that is FDA approved for the treatment of vascular spasm associated with acute myocardial infarction (coronary occlusion), angina pectoris, peripheral vascular disease, peripheral and pulmonary embolism.   Common adverse reactions include general discomfort, nausea, abdominal discomfort, anorexia, skin rash, malaise, vertigo and headache..
option_0: Papaverine
option_1: Moxaverine
option_2: Oxymetazoline hydrochloride
option_3: Oxymetazoline
option_4: Tolazoline
option_5: Ethanolamine
option_6: Terbutaline 
option_7: Prothionamide