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  • Title: [Randomized, double-blind comparison of isosorbide-5-mononitrate and delayed-action nifedipine in patients with stable exertional angina. Multicenter Study Group].
    Author: Ueberbacher HJ, Patyna WD, Krepp P, Puespoek J, Neuhaus R, Hilbich K, Bulitta M, Rittinghausen R.
    Journal: Schweiz Med Wochenschr; 1991 Dec 07; 121(49):1836-40. PubMed ID: 1754868.
    Abstract:
    The therapeutic effects of IS-5-MN and s.r. nifedipine were investigated in this double-blind, randomized, group-comparative, multicenter study over 2 weeks, in 251 patients with stable reproducible exercise-induced angina. After 2 weeks' treatment with IS-5-MN 20 mg b.i.d. or t.i.d., 61% of the patients were responders who showed an increase in total exercise time (to moderately severe angina) of greater than or equal to 20% in comparison with placebo in the run-in phase. The corresponding responder rate after s.r. nifedipine 20 mg b.i.d. or 40 mg b.i.d. was 53%. Both IS-5-MN and s.r. nifedipine significantly increased the total exercise time, the time to angina onset and to greater than or equal to 1 mm ST-depression, and significantly reduced the rate pressure product and the ST-segment depression at peak exercise in comparison with placebo in the run-in phase. The improvement in quality of life as indicated by the reduction in anginal episodes and intake of short-acting nitrates was comparable with both drugs. The pattern and incidence of all AEs were as expected in the two active treatment groups. The daily treatment costs for a 20 mg b.i.d. dosing regimen for both drugs in the Federal Republic of Germany was 64% higher for s.r. nifedipine than with IS-5-MN.
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