Tolerability to 1-year treatment with once-daily molsidomine in patients with stable angina

Roger Messin, Jacques Bruhwyler, Claude Dubois, Jean-Pierre Famaey, Joseph Géczy
Advances in Therapy 2006, 23 (4): 601-14
Prolonged-release molsidomine 16 mg once daily) QD (has proved effective in the short-term treatment of patients with stable angina. The purpose of this multicenter study was to assess its long-term tolerability and clinical effectiveness. A total of 320 patients with stable angina were treated for 1 year with molsidomine 16 mg QD administered open label as monotherapy or add-on therapy, when beta blockers and/or calcium antagonists were prescribed concomitantly) in 128 patients, ie, 40% of cases), depending on the severity of disease and/or local therapeutic policies. In all, 293 patients (91.6%) completed the study. The proportion of patients who reported drug-related adverse events (AEs) was 9.1%, which is not significantly different (P=.13) from the 5.9% observed during previous short-term (2-4 wk) treatment. Headache accounted for 80.6% of all drug-related AEs and required discontinuation of the drug in one quarter of patients who reported the symptom (ie, 1.9% of the 320 patients involved in the study). No serious drug-related AEs occurred during the study. Tolerability to molsidomine, evaluated with use of a visual analog scale (VAS), improved by 20% from beginning to end of 1-year follow-up. Two-by-two Bonferroni's comparisons were significant at the .05 level between the 2-month assessment and assessments performed at 8, 10, and 12 months. No age-time interaction was noted (P=.82). Heart rate, blood pressure, electrocardiogram, and blood parameters showed no statistically significant or clinically relevant changes during the study. Compliance with treatment was satisfactory throughout the follow-up period. There was no significant change in the weekly frequency of anginal attacks and consumption of short-acting nitroderivatives during the 1-year study (P=.07 and P=.12,respectively), but their frequency was significantly (ie, approximately 50%) lower than during a preceding short-term treatment period (P<.0001 and P=.014, respectively). Subjective clinical status, evaluated through an appropriate VAS, improved by 38% from start to end of 1-year follow-up. Bonferroni's comparisons between baseline and subsequent 2-month evaluations were all significant at the .05 level. No age-time interaction could be seen for frequency of anginal attacks and consumption of short-acting nitroderivatives, nor for clinical status )P=.10, P=.11, and P=.51, respectively). Neither tolerability to molsidomine nor effectiveness of the drug was biased by concomitant antianginal therapies, insofar as none of these parameters showed a significant treatment type (ie, molsidomine administered as monotherapy or add-on therapy)-time interaction (VAS for tolerability: P=.44; angina: P=.39; nitroderivatives: P=.72; VAS for clinical status: P=.62). Molsidomine 16 mg QD administered for 1 y to patients with stable angina was well tolerated and remained effective during the entire treatment period, independent of age and concomitant antianginal therapy.

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