Long-term tolerability and effectiveness of once-daily mixed amphetamine salts (adderall XR) in children with ADHD

James J. McGough, Joseph Biederman, Sharon B. Wigal, Frank A. Lopez, James T. McCracken, Thomas Spencer, Yuxin Zhang, Simon J. Tulloch

Research output: Contribution to journalArticlepeer-review

78 Scopus citations

Abstract

Objective: To evaluate the long-term tolerability and effectiveness of extended-release mixed amphetamine salts (MAS XR; Adderall XR®) in children with attention-deficit/hyperactivity disorder (ADHD). Method: This was a 24-month, multi-center, open-label extension of TWO placebo-controlled studies of MAS XR in children with ADHD aged 6 to 12 years. Subjects (N = 568) began treatment with MAS XR 10 mg once daily, with 10-mg weekly dose increases to optimal effectiveness (maximum dose, 30 mg/d). Effectiveness was assessed with analysis of quarterly Conners Global Index Scale, Parent version (CGIS-P) scores. Tolerability was assessed by monitoring adverse events (AEs), vital signs, physical examinations, and serial laboratory tests. Results: Significant improvements (>30%, p < .001) in CGIS-P scores were maintained during long-term treatment. Treatment was well tolerated, and most AEs were mild. The most frequently reported drug-related AEs included anorexia, insomnia, and headache. The incidence of drug-related AEs increased with increasing MAS XR dose, suggesting a dose relationship. Changes in laboratory values and vital signs were modest and not clinically meaningful. Conclusions: In children with ADHD, once-daily 10 mg-30 mg MAS XR was well tolerated and significant behavioral improvements were consistently maintained during 24 months of treatment.

Original languageEnglish
Pages (from-to)530-538
Number of pages9
JournalJournal of the American Academy of Child and Adolescent Psychiatry
Volume44
Issue number6
DOIs
StatePublished - Jun 2005
Externally publishedYes

Keywords

  • Adderall XR
  • Amphetamine
  • Attention-deficit/hyperactivity disorder
  • Long-term treatment

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