Independent directory Public ClinicalTrials.gov records United States
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ClinicalTrials.gov public records Last synced Oct 19, 2026, 10:28 PM EDT

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Showing 1–2 of 2 matching trials from the live ClinicalTrials.gov search.
Conditions
ADHD
Interventions
SPD503-AM, SPD503-PM, Placebo
Drug
Lead sponsor
Shire
Industry
Eligibility
6 Years to 17 Years
Enrollment
461 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
61
States / cities
Dothan, Alabama • Scottsdale, Arizona • Little Rock, Arkansas + 53 more
Conditions
Attention-Deficit/Hyperactivity Disorder
Interventions
extended-release guanfacine hydrochloride (SPD503), placebo, extended-release guanfacine hydrochloride
Drug
Lead sponsor
Shire
Industry
Eligibility
6 Years to 12 Years
Enrollment
340 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
42
States / cities
Little Rock, Arkansas • El Centro, California • Rolling Hills Estates, California + 38 more