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

Author information

  • 1Division of Child and Adolescent Psychiatry, UCLA Neuropsychiatric Institute, Los Angeles, CA, USA. jmcgough@mednet.ucla.edu

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, multicenter, 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.

PMID:
15908835
[PubMed - indexed for MEDLINE]
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