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  • Title: Comparative study of lacidipine and nifedipine SR in the treatment of hypertension: an Italian multicenter study. The Northern Italian Study Group of Lacidipine in Hypertension.
    Author: Leonetti G.
    Journal: J Cardiovasc Pharmacol; 1991; 17 Suppl 4():S31-4. PubMed ID: 1726003.
    Abstract:
    The aim of this study was to compare the antihypertensive efficacy and tolerability of lacidipine, a new dihydropyridine calcium antagonist, and slow-release nifedipine (SR) in patients with mild-to-moderate essential hypertension. After a 1-month placebo run-in period, 435 patients were randomized into a double-blind, parallel-group study to receive either 4 mg of lacidipine once daily (n = 220) or 20 mg of nifedipine twice daily (n = 215). After 4 weeks, the doses for "nonresponders" were increased to 6 mg of lacidipine once daily (n = 82) and to 40 mg of nifedipine SR twice daily (n = 62). After 4 weeks, 50 mg of atenolol once daily was added to the regimens of patients still uncontrolled by lacidipine (n = 32) and nifedipine SR (n = 23) as monotherapy. Sitting blood pressure and heart rate were measured at 22-24 h after lacidipine and 10-12 h after nifedipine SR. Both calcium antagonists similarly and significantly reduced the blood pressure at rest (sitting) and on exercise, while the heart rate did not change significantly. The nature and incidence of side effects and withdrawals also did not differ between the two. In conclusion, lacidipine once daily is as effective and well tolerated as nifedipine SR twice daily in patients with mild-to-moderate essential hypertension.
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