title: A comparison of morning-only and morning/late afternoon Adderall to morning-only, twice-daily, and three times-daily methylphenidate in children with attention-deficit/hyperactivity disorder.
abstract: OBJECTIVE
  1) To compare standard twice-daily methylphenidate (MPH) dosing with a single morning dose of MPH and of Adderall during a typical school-day time period, and 2) to conduct a dose-response study of the effects of a late-afternoon (3:30 PM) dose of MPH and Adderall on evening behavior and side effects.
  
  
  METHODS
  Within-subject, placebo-controlled, crossover design.
  
  
  METHODS
  Intensive summer treatment program with a comprehensive behavioral approach.
  
  
  METHODS
  Twenty-one children with attention-deficit/hyperactivity disorder (19 boys and 2 girls), between the ages of 6 and 12 years.
  
  
  METHODS
  Children received, in random order with daily crossovers, each of the following conditions: 1) placebo, 2) 0.3 mg/kg of MPH received 3 times, 3) 0.3 mg/kg of MPH received twice (7:30 AM and 11:30 AM) with 0.15 mg/kg received at 3:30 PM, 4) 0.3 mg/kg of MPH received once in the morning only, 5) 0.3 mg/kg of Adderall received at 7:30 AM and at 3:30 PM, 6) 0.3 mg/kg of Adderall once in the morning with 0.15 mg/kg received at 3:30 PM, 7) 0.3 mg/kg of Adderall received in the morning only.
  
  
  METHODS
  Daily rates of behaviors in social and academic settings, and standardized ratings from counselors and teachers, were assessed for the hours between 8:00 AM and 3:30 PM (a typical school-day). Relative sizes of the medication effects were compared hourly between first daily ingestion (7:30 AM) and 4:45 PM to assess the time course of the 2 drugs. Effects of the 3:30 PM doses on functioning in the evenings at home were evaluated using parent ratings of behavioral and side effects.
  
  
  RESULTS
  A single morning dose of Adderall produced equivalent behavioral effects to those of MPH received twice-daily and behavioral effects of that single morning dose lasted throughout the school-day period. One morning dose of MPH was less effective than either 2 daily doses of MPH or 1 dose of Adderall, and seemed to wear off in the early to mid-afternoon. For some children a single morning dose of MPH maintained their behavior for an entire school day in the context of the summer treatment program. On parent ratings of evening behavior, 0.3 mg/kg of MPH at 3:30 PM was superior to 0.15 mg/kg at 3:30 PM, but there was no difference between the 2 doses of Adderall. Compared with placebo at 3:30 PM, only the 0.3 mg/kg dose of MPH caused significant improvement in parent ratings. In placebo versus Adderall comparisons, all doses, even the condition that consisted of Adderall in the morning and placebo at 3:30 PM, produced a significant change in evening behavior.
  
  
  CONCLUSIONS
  The results show that, at least in the context of an intensive behavioral intervention, a single morning dose of Adderall had behavioral effects throughout an entire school day period that were equivalent to standard twice-daily MPH dosing. These results indicate that Adderall may be used as a long-acting stimulant for children for whom midday dosing is a problem. Further study including dose-response comparisons, effects in regular school settings, and direct comparisons with comparable doses of MPH and d-amphetamine will help to clarify the time course and relative advantages of Adderall.
authors.affiliation: Department of Psychology, State University of New York at Buffalo, Buffalo, NY 14260-4110, USA. pelham@acsu.buffalo.edu
authors.forename: W E
authors.initials: WE
authors.lastname: Pelham
authors.forename: E M
authors.initials: EM
authors.lastname: Gnagy
authors.forename: A M
authors.initials: AM
authors.lastname: Chronis
authors.forename: L
authors.initials: L
authors.lastname: Burrows-MacLean
authors.forename: G A
authors.initials: GA
authors.lastname: Fabiano
authors.forename: A N
authors.initials: AN
authors.lastname: Onyango
authors.forename: D L
authors.initials: DL
authors.lastname: Meichenbaum
authors.forename: A
authors.initials: A
authors.lastname: Williams
authors.forename: H R
authors.initials: HR
authors.lastname: Aronoff
authors.forename: R L
authors.initials: RL
authors.lastname: Steiner
mesh_terms: D000662:Amphetamines / Q000008:administration & dosage* / Q000009:adverse effects; D001289:Attention Deficit Disorder with Hyperactivity / Q000188:drug therapy*; D000697:Central Nervous System Stimulants / Q000008:administration & dosage* / Q000009:adverse effects; D002648:Child; D002652:Child Behavior / Q000187:drug effects; D018592:Cross-Over Studies; D004305:Dose-Response Relationship, Drug; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008774:Methylphenidate / Q000008:administration & dosage* / Q000009:adverse effects; D010919:Placebos; D013997:Time Factors
chemical_list: C090411:Adderall; D000662:Amphetamines; D000697:Central Nervous System Stimulants; D010919:Placebos; D008774:Methylphenidate