ADHD drug trial for 4-5 year olds halted early
NCT ID NCT06431256
First seen Jun 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study tested a long-acting form of methylphenidate (Ritalin) given in the evening to children aged 4-5 with ADHD. The goal was to see if it improved ADHD symptoms and was safe. However, the trial was stopped early and only enrolled 26 children, so we cannot draw firm conclusions.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
Active substance
methylphenidate hydrochloride (extended-release capsules)
What this could lead to
If successful, this could provide a treatment option for managing ADHD symptoms in preschool-aged children.
What could go wrong
The study was terminated early with only 26 participants, so results are limited. It is unclear if the drug is safe or effective in this young age group.
Disclaimer
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This is a summary of
the original study
.
Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
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Locations
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Advanced Research Center, Inc.
Anaheim, California, 92805, United States
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Alivation Research, LLC
Lincoln, Nebraska, 68526, United States
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CenExel iResearch, LLC
Decatur, Georgia, 30030, United States
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Clinical Neuroscience Solutions, Inc.
Jacksonville, Florida, 32256, United States
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Clinical Neuroscience Solutions, Inc.
Orlando, Florida, 32801, United States
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Clinical Neuroscience Solutions, Inc.
Memphis, Tennessee, 38119, United States
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Coastal Pediatric Research
Summerville, South Carolina, 29486, United States
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DelRicht Research
New Orleans, Louisiana, 70115, United States
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Harmonex, Inc.
Dothan, Alabama, 36303, United States
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Midwest Research Group
Saint Charles, Missouri, 63304, United States
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South Florida Research
Miami Springs, Florida, 33166, United States
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University of Cincinnati Health
Cincinnati, Ohio, 45219, United States
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Vector Clinical Trials
Las Vegas, Nevada, 89128, United States