in a multicentre double-blind crossover study the clinical efficacy and tolerability of a controlled-release formulation , durules , of isosorbide 5-mononitrate ( imdur ) 60mg once daily was compared with placebo over 2 weeks in 70 patients with stable exercise-induced angina pectoris who were receiving concomitant long term beta-blockade .
C0064079
isosorbide
C0590690
imdur