title: Bioavailability of amlodipine besylate/atorvastatin calcium combination tablet.
abstract: The bioequivalence of combination tablets containing amlodipine besylate/atorvastatin calcium with coadministered matching doses of amlodipine besylate and atorvastatin calcium tablets was investigated in randomized, 2-way crossover studies in healthy volunteers (N = 126). Subjects received a single dose of the amlodipine/atorvastatin tablet or coadministered matching doses of amlodipine and atorvastatin at the highest (10/80 mg; n = 62) and lowest (5/10 mg; n = 64) dose strengths. Atorvastatin geometric mean ratios for maximum plasma concentration (C(max)) and area under the plasma concentration-time curve (AUC) for the highest and lowest dose strengths were 94.1 and 98.8, and 104.5 and 103.8, respectively. Amlodipine geometric mean ratios for C(max) and AUC for the highest and lowest dose strengths were 100.8 and 103.4, and 100 and 102.7, respectively. The 90% confidence intervals for all comparisons were within 80% to 125%, demonstrating bioequivalence for amlodipine and atorvastatin at both dose strengths. Use of amlodipine/atorvastatin combination tablets may provide a more integrated approach to treatment of cardiovascular risk.
authors.affiliation: Pfizer Global Research and Development, Ann Arbor Laboratories, 2800 Plymouth Road, Ann Arbor, MI 48105, USA.
authors.forename: Menger
authors.initials: M
authors.lastname: Chung
authors.forename: Albert
authors.initials: A
authors.lastname: Calcagni
authors.forename: Paul
authors.initials: P
authors.lastname: Glue
authors.forename: Candace
authors.initials: C
authors.lastname: Bramson
mesh_terms: D000293:Adolescent; D000328:Adult; D017311:Amlodipine / Q000008:administration & dosage* / Q000009:adverse effects / Q000097:blood / Q000493:pharmacokinetics*; D000069059:Atorvastatin; D001682:Biological Availability; D018592:Cross-Over Studies; D004338:Drug Combinations; D005260:Female; D006262:Health; D006538:Heptanoic Acids / Q000008:administration & dosage* / Q000009:adverse effects / Q000097:blood / Q000493:pharmacokinetics*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011758:Pyrroles / Q000008:administration & dosage* / Q000009:adverse effects / Q000097:blood / Q000493:pharmacokinetics*; D013607:Tablets / Q000737:chemistry
chemical_list: D004338:Drug Combinations; D006538:Heptanoic Acids; D011758:Pyrroles; D013607:Tablets; D017311:Amlodipine; D000069059:Atorvastatin