a multi-centre study was carried out in 200 coronary patients to compare the efficacy and tolerance of isosorbide dinitrate retard ( 40 mg ) and isosorbide-5-mononitrate ( 20 mg ) with regard to the frequency of anginal attacks and consumption of sub-lingual ( short acting ) nitrates .
C0022252
isosorbide dinitrate
C0064079
isosorbide-5-mononitrate