title: Pharmacokinetics of rizatriptan tablets during and between migraine attacks.
abstract: Gastric stasis during migraine attacks results in delayed absorption of several orally administered antimigraine agents. This study, as part of a larger trial, was conducted to examine the pharmacokinetics of rizatriptan tablets during and between migraine attacks. Participating patients met IHS criteria for migraine with or without aura, and suffered between one and eight migraines per month for the previous 6 months. In part 1 of the study, 21 patients were randomized to receive a single 5-mg tablet of rizatriptan or placebo in the migraine-free state. In part 2, the same patients were treated during migraine with rizatriptan 5-mg tablets (n=18) or placebo (n=3). Blood samples were obtained before dosing and 0.25, 0.5, 0.75, 1, 1.5, 2, 3, 4, 6, 8, and 12 hours after dosing. The plasma concentration profile (ie, AUC((0-infinity)), C(max), T(max)) of rizatriptan 5-mg tablets administered during and between migraine attacks were comparable. The median T(max) for rizatriptan between and during attacks was 1 hour, indicating rapid absorption even during a migraine attack. Rizatriptan 5 mg was well tolerated and 67% of the patients experienced headache relief 2 hours postdose.
authors.affiliation: California Clinical Trials, Beverly Hills, CA 90211, USA.
authors.forename: N R
authors.initials: NR
authors.lastname: Cutler
authors.forename: S S
authors.initials: SS
authors.lastname: Jhee
authors.forename: A K
authors.initials: AK
authors.lastname: Majumdar
authors.forename: D
authors.initials: D
authors.lastname: McLaughlin
authors.forename: M J
authors.initials: MJ
authors.lastname: Brucker
authors.forename: A D
authors.initials: AD
authors.lastname: Carides
authors.forename: M S
authors.initials: MS
authors.lastname: Kramer
authors.forename: D
authors.initials: D
authors.lastname: Matzura-Wolfe
authors.forename: S A
authors.initials: SA
authors.lastname: Reines
authors.forename: M R
authors.initials: MR
authors.lastname: Goldberg
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D004305:Dose-Response Relationship, Drug; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D008881:Migraine Disorders / Q000188:drug therapy*; D017366:Serotonin Receptor Agonists / Q000097:blood / Q000493:pharmacokinetics* / Q000627:therapeutic use; D013997:Time Factors; D014230:Triazoles / Q000097:blood / Q000493:pharmacokinetics* / Q000627:therapeutic use; D014363:Tryptamines / Q000097:blood / Q000493:pharmacokinetics* / Q000627:therapeutic use
chemical_list: D017366:Serotonin Receptor Agonists; D014230:Triazoles; D014363:Tryptamines; C093622:rizatriptan