title: Relative efficacy and tolerability of lacidipine and amlodipine in patients with mild-to-moderate hypertension: a randomized double-blind study.
abstract: Calcium channel blockers are increasingly used in the treatment of hypertension. Newer calcium channel blockers of the dihydropyridine group have longer elimination half-lives (t1/2) that permit once-daily dosage and are generally better tolerated than their parent compound. In this study, the efficacy and safety of lacidipine and amlodipine were compared in 65 patients with mild-to-moderate hypertension attending the hypertension outpatient clinic of a teaching hospital in a randomized double-blind cross-over trial with dose titration. Lacidipine and amlodipine both significantly reduced systolic blood pressure (SBP: by 19.2 +/- 13.5 and 22.3 +/- 15.3 mm Hg, respectively) and diastolic BP (DBP: 13.3 +/- 4.2 and 12.3 +/- 5.3 mm Hg, respectively) 24 h postdose. There were no significant differences in their antihypertensive effects. The incidence of adverse events (AE) was 3% for lacidipine and 8% for amlodipine. The incidence of withdrawal from the study due to side effects was 0% for lacidipine and 3% for amlodipine. These results suggest that lacidipine is well-tolerated, and is as effective as amlodipine as a once-daily antihypertensive agent.
authors.affiliation: Division of Cardiology, University of Hong Kong, Queen Mary Hospital, Hong Kong.
authors.forename: C P
authors.initials: CP
authors.lastname: Lau
authors.forename: B M
authors.initials: BM
authors.lastname: Cheung
mesh_terms: D000328:Adult; D000368:Aged; D017311:Amlodipine / Q000009:adverse effects / Q000627:therapeutic use*; D000959:Antihypertensive Agents / Q000009:adverse effects / Q000627:therapeutic use*; D001794:Blood Pressure / Q000187:drug effects; D004095:Dihydropyridines / Q000009:adverse effects / Q000627:therapeutic use*; D004311:Double-Blind Method; D005260:Female; D006207:Half-Life; D006801:Humans; D006973:Hypertension / Q000188:drug therapy* / Q000503:physiopathology; D008297:Male; D008875:Middle Aged; D011674:Pulse / Q000187:drug effects
chemical_list: D000959:Antihypertensive Agents; D004095:Dihydropyridines; D017311:Amlodipine; C060285:lacidipine