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Behavior, Addictive clinical trials

The registry lists 521 studies for Behavior, Addictive across more than 10 countries. 124 are recruiting or about to start. 122 of them are mainly about Behavior, Addictive (how this is decided). Per ClinicalTrials.gov, last updated 2026-11-09. Counting its 4 narrower conditions too, such as Internet Addiction Disorder: 743 studies, 182 open.

Get an email when these change. Save the Behavior, Addictive studies recruiting or about to start — once a week, free: studies that open, close, add sites or post results.

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Example · made-up studies

Breast cancer · Recruiting: 2 came in, 3 changed

What changed in your saved searches, Oct 31 – Nov 6:

A study of drug A after surgery for early breast cancer

Came in · now Recruiting

Drug B with hormone therapy in advanced breast cancer

Changed

· Sites: 4 added, including Seoul and Busan

· Enrollment: 300 → 450 participants

Exercise during chemotherapy

Now Active, not recruiting

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Status

Completed
300
Recruiting
79
Status unknown
52
Not yet recruiting
40
Terminated
16
Active, not recruiting
15

Phase

Phase 2
92
Phase 1
42
Phase 3
18
Phase 4
16
Early Phase 1
12

Where

United States
250
France
77
Canada
30
Turkey
20
Germany
12
Netherlands
12

Who runs them

Medical University of South Carolina (15) · Yale University (13) · Assistance Publique - Hôpitaux de Paris (11) · Johns Hopkins University (11) · National Institute on Drug Abuse (NIDA) (10) · Centre for Addiction and Mental Health (9) · Assiut University (8) · University of California, Los Angeles (8)

What is being tested here

Drugs under test in Behavior, Addictive studies, those with the most open studies first. Medicines only given beside them are not counted. How drugs are counted

DrugOpenPhase 3All
Semaglutide406
Tirzepatide303
Psilocybin205
Ethanol204
Naltrexone1514
Nicotine103
Cytisine112
Glucagon-Like Peptide 1101
Lemborexant101
Daridorexant101

Drug classes tested here GLP-1 receptor agonists 6 open · Opioid antagonists 1 open · Opioids 7 · Stimulants 5 · Antipsychotics 4

Coming up

1phase 3 study under way
43studies finish main data collection within a year

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

Who these studies take

Of the 79 Behavior, Addictive studies recruiting now, 44 (56%) set no upper age limit and 33 (42%) stop at 75 or younger. 7 (9%) take children under 18. 4 (5%) are for women only and 1 (1%) for men only; 23 (29%) take healthy volunteers.

Recruiting studies that take each age, of 79
AgeWomenMen
102 (3%)2 (3%)
1863 (80%)60 (76%)
3071 (90%)68 (86%)
4071 (90%)68 (86%)
5070 (89%)67 (85%)
6565 (82%)62 (78%)
7549 (62%)47 (59%)
8545 (57%)43 (54%)

Across all 521 studies, recruiting or not: 56% stop at 75 or younger and 48% at 65; 14% take children; 4% are for women only and 5% for men only; 31% take healthy volunteers. From each study’s registry entry; the criteria on its page decide.

How long Behavior, Addictive studies take

Of 23 phase 1 interventional studies under Behavior, Addictive, half reached primary completion within 23 months of starting, counting those still running.

Start to primary completionEvery sponsorIndustryNon-industry
Phase 123 mo11–47 · 23 studies——
Phase 243 mo31–59 · 23 studies——
Interventional, no phase26 mo10–42 · 155 studies—27 mo10–42 · 147 studies
Observational40 mo20–73 · 49 studies—40 mo20–111 · 46 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 11, 2026.

Started recruiting2

Newly registered2

Studies

Recruiting first, then most recently updated. Showing 50 of 521. Browse all 521 → or search them.