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Attention Deficit Disorder with Hyperactivity clinical trials

The registry lists 1,817 studies for Attention Deficit Disorder with Hyperactivity across more than 10 countries. 296 are recruiting or about to start. 1,561 of them are mainly about Attention Deficit Disorder with Hyperactivity (how this is decided). Per ClinicalTrials.gov, last updated 2026-11-10.

ClinicalTrials.gov finds 1,825 studies for Attention Deficit Disorder with Hyperactivity. How that becomes 1,815 here

This page counts the studies the registry files under Attention Deficit Disorder with Hyperactivity, and those it files under no condition that list Attention Deficit Disorder with Hyperactivitythemselves. Each study its search finds is placed by how the registry filed it and by the conditions it lists. ClinicalTrials.gov counts as of Nov 8, 2026. How condition pages count

  1. 1,825Found by its condition searchIt reads the conditions a study lists and their synonyms, and also titles and keywords.
  2. −2List Attention Deficit Disorder with Hyperactivity as a condition, but the registry did not file them under itMost often written as “Attention Deficit Disorder With Hyperactivity Disease” (1) and “ADHD - Combined Type” (1). The registry filed them under other conditions only, most often Hyperkinesis (1) and Attention Deficit and Disruptive Behavior Disorders (1).
  3. −20Match it another way16 name it in the title and 4 by a synonym or other text the search reads.
  4. 1,803Counted here and found by its search8 of them list Attention Deficit Disorder with Hyperactivity in their own words; the registry filed them under no condition.
  5. +12
    Counted here, but its search does not find them
  6. 1,815The count on this page

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Status

Completed
1,165
Status unknown
201
Recruiting
201
Not yet recruiting
73
Terminated
64
Active, not recruiting
46

Phase

Phase 4
231
Phase 3
228
Phase 2
176
Phase 1
79
Early Phase 1
18

Where

United States
807
Canada
85
Israel
85
France
82
Taiwan
73
Germany
63

Who runs them

Massachusetts General Hospital (66) · Eli Lilly and Company (53) · Shire (48) · National Taiwan University Hospital (39) · Children's Hospital Medical Center, Cincinnati (36) · Supernus Pharmaceuticals, Inc. (22) · Otsuka Pharmaceutical Development & Commercialization, Inc. (21) · Karolinska Institutet (21)

What is being tested here

Drugs under test in Attention Deficit Disorder with Hyperactivity studies, those with the most open studies first. Medicines only given beside them are not counted. How drugs are counted

DrugOpenPhase 3All
Methylphenidate1747179
Centanafadine51220
Atomoxetine42684
Omega-3 fatty acid3013
Adderall239
Lisdexamfetamine11550
Guanfacine1925
Viloxazine1812
Amphetamine129
Probiotic105

Drug classes tested here Stimulants 21 open · Antipsychotics 21

Coming up

15phase 3 studies under way
97studies finish main data collection within a year5 of them phase 3

Studies recruiting or running, from their records. “Main data collection” ends at the primary completion date, the sponsor’s own estimate, which often moves.

The 10 nearest, phase 3 first

Who these studies take

Of the 201 Attention Deficit Disorder with Hyperactivity studies recruiting now, 27 (13%) set no upper age limit and 169 (84%) stop at 75 or younger. 141 (70%) take children under 18. 7 (3%) are for women only and 1 (<1%) for men only; 55 (27%) take healthy volunteers.

Recruiting studies that take each age, of 201
AgeWomenMen
10106 (53%)104 (52%)
1898 (49%)92 (46%)
3067 (33%)60 (30%)
4064 (32%)58 (29%)
5060 (30%)55 (27%)
6547 (23%)43 (21%)
7535 (17%)31 (15%)
8530 (15%)26 (13%)

Across all 1,817 studies, recruiting or not: 90% stop at 75 or younger and 89% at 65; 71% take children; 1% are for women only and 2% for men only; 26% take healthy volunteers. From each study’s registry entry; the criteria on its page decide.

How long Attention Deficit Disorder with Hyperactivity studies take

Of 80 phase 3 interventional studies under Attention Deficit Disorder with Hyperactivity, half reached primary completion within 14 months of starting, counting those still running.

Start to primary completionEvery sponsorIndustryNon-industry
Phase 19 mo2–26 · 35 studies2 mo1–7 · 21 studies—
Phase 215 mo5–34 · 40 studies10 mo4–14 · 24 studies—
Phase 314 mo7–32 · 80 studies12 mo6–19 · 66 studies—
Phase 438 mo18–70 · 62 studies—59 mo37–81 · 44 studies
Interventional, no phase23 mo11–41 · 510 studies12 mo7–17 · 31 studies24 mo11–43 · 479 studies
Observational35 mo20–69 · 95 studies—35 mo18–69 · 85 studies

Each figure is the month by which half the studies had reached primary completion, with the range in which the middle half did. Studies still running count until their last registry update; studies that stopped early are left out. Phase 1 includes early phase 1; observational means prospective or not stated, as retrospective and cross-sectional studies date a window of data rather than a study. How these figures are worked out

What changed recently

From the registry's own updates since Oct 13, 2026.

Started recruiting1

Newly registered10

Show 5 more

Studies

Recruiting first, then most recently updated. Showing 50 of 1,817. Browse all 1,817 → or search them.