title: Effect of grapefruit juice on clarithromycin pharmacokinetics.
abstract: To investigate whether grapefruit juice inhibits the metabolism of clarithromycin, 12 healthy subjects were given water or grapefruit juice before and after a clarithromycin dose of 500 mg in a randomized crossover study. Administration of grapefruit juice increased the time to peak concentration of both clarithromycin (82 +/- 35 versus 148 +/- 83 min; P = 0.02) and 14-hydroxyclarithromycin (84 +/- 38 min versus 173 +/- 85; P = 0.01) but did not affect other pharmacokinetic parameters.
authors.affiliation: Department of Pharmacy Services, Bassett Healthcare, Cooperstown, New York 13326-1394, USA.
authors.forename: K L
authors.initials: KL
authors.lastname: Cheng
authors.forename: A N
authors.initials: AN
authors.lastname: Nafziger
authors.forename: C A
authors.initials: CA
authors.lastname: Peloquin
authors.forename: G W
authors.initials: GW
authors.lastname: Amsden
mesh_terms: D000328:Adult; D000900:Anti-Bacterial Agents / Q000493:pharmacokinetics*; D019540:Area Under Curve; D001628:Beverages; D002957:Citrus / Q000737:chemistry*; D017291:Clarithromycin / Q000493:pharmacokinetics*; D018592:Cross-Over Studies; D051544:Cytochrome P-450 CYP3A; D003577:Cytochrome P-450 Enzyme System / Q000378:metabolism; D005260:Female; D018565:Food-Drug Interactions; D006801:Humans; D008297:Male; D006899:Mixed Function Oxygenases / Q000378:metabolism
chemical_list: D000900:Anti-Bacterial Agents; D003577:Cytochrome P-450 Enzyme System; D006899:Mixed Function Oxygenases; C104464:CYP3A protein, human; D051544:Cytochrome P-450 CYP3A; D017291:Clarithromycin