title: Sustained release methylphenidate: pharmacokinetic studies in ADDH males.
abstract: Methylphenidate is widely used in the treatment of school-age children with attention deficit disorder with hyperactivity (ADDH). It is available in a short-acting (MPH) and a long-acting (MPH-SR) preparation. Nine males with ADDH participated in a 1-day pharmacokinetic study following a single morning dose of 20 mg. MPH-SR. Data are presented on MPH-SR's half-life (T 1/2), peak concentrations achieved (Cmax) and the time to the peak plasma concentrations (Tmax). Similar data were gathered from a second group of eight ADDH males treated with a higher, single morning dose of standard, short-acting MPH. After adjusting for dose differences, comparisons of the two sets of plasma concentration curves suggest that MPH-SR has a longer Tmax, but that it does not reach the same Cmax as an identical dose of standard MPH.
authors: B
authors: B
authors: Birmaher
authors: L L
authors: LL
authors: Greenhill
authors: T B
authors: TB
authors: Cooper
authors: J
authors: J
authors: Fried
authors: B
authors: B
authors: Maminski
mesh_terms: D000293:Adolescent; D001289:Attention Deficit Disorder with Hyperactivity / Q000097:blood* / Q000188:drug therapy; D002648:Child; D003692:Delayed-Action Preparations; D006801:Humans; D008297:Male; D008774:Methylphenidate / Q000008:administration & dosage / Q000493:pharmacokinetics*
chemical_list: D003692:Delayed-Action Preparations; D008774:Methylphenidate