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Tobacco Use Cessation clinical trials

The registry lists 276 studies for Tobacco Use Cessation across more than 10 countries. 45 are recruiting or about to start. 149 of them are mainly about Tobacco Use Cessation (how this is decided). Per ClinicalTrials.gov, last updated 2026-11-12.

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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
195
Recruiting
23
Not yet recruiting
15
Active, not recruiting
12
Status unknown
12
Enrolling by invitation
7

Phase

Phase 3
27
Phase 2
24
Phase 4
20
Phase 1
10
Early Phase 1
3

Where

United States
190
India
9
Canada
9
France
9
Spain
7
Sweden
6

Who runs them

Mayo Clinic (11) · University of California, San Francisco (11) · M.D. Anderson Cancer Center (10) · University of Minnesota (10) · Yale University (9) · Harvard School of Public Health (HSPH) (7) · Duke University (7) · Washington University School of Medicine (6)

What is being tested here

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

DrugOpenPhase 3All
Varenicline228
Nicotine1516
Nicotine Patch1210
Cytisine101
Cannabidiol101
Bupropion006
Nicotine Lozenge004
Nicotine Chewing Gum003
NicVAX023
Progesterone002

Coming up

3phase 3 studies under way
28studies 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 23 Tobacco Use Cessation studies recruiting now, 16 (70%) set no upper age limit and 6 (26%) stop at 75 or younger. 1 (4%) take children under 18. 3 (13%) are for women only and 0 (0%) for men only; 9 (39%) take healthy volunteers.

Recruiting studies that take each age, of 23
AgeWomenMen
101 (4%)1 (4%)
1820 (87%)17 (74%)
3020 (87%)17 (74%)
4020 (87%)17 (74%)
5021 (91%)18 (78%)
6521 (91%)18 (78%)
7519 (83%)16 (70%)
8517 (74%)14 (61%)

Across all 276 studies, recruiting or not: 25% stop at 75 or younger and 20% at 65; 13% take children; 6% are for women only and 2% for men only; 56% take healthy volunteers. From each study’s registry entry; the criteria on its page decide.

How long Tobacco Use Cessation studies take

Of 116 interventional studies with no phase under Tobacco Use Cessation, half reached primary completion within 24 months of starting, counting those still running.

Start to primary completionEvery sponsorIndustryNon-industry
Interventional, no phase24 mo15–40 · 116 studies—26 mo15–40 · 115 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 14, 2026.

Started recruiting2

Results posted3

Newly registered1

Studies

Recruiting first, then most recently updated. Showing 50 of 276. Browse all 276 → or search them.