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Tobacco Use clinical trials

The registry lists 420 studies for Tobacco Use across more than 10 countries. 82 are recruiting or about to start. 172 of them are mainly about Tobacco Use (how this is decided). Per ClinicalTrials.gov, last updated 2026-11-09. Counting its 2 narrower conditions too, such as Cigarette Smoking: 1,012 studies, 180 open.

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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
273
Recruiting
50
Not yet recruiting
22
Status unknown
21
Terminated
15
Withdrawn
15

Phase

Phase 2
25
Phase 1
22
Phase 3
14
Phase 4
11
Early Phase 1
7

Where

United States
311
France
10
Canada
6
India
6
Sweden
5
Kenya
3

Who runs them

RAI Services Company (42) · Mayo Clinic (13) · University of California, San Francisco (12) · Medical University of South Carolina (9) · University of Minnesota (9) · Altria Client Services LLC (9) · University of Oklahoma (9) · Duke University (8)

What is being tested here

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

DrugOpenPhase 3All
Dronabinol203
Nicotine119
Cannabis sativa subsp. indica TOP102
Cephalexin101
Doxycycline101
Cefadroxil101
Cannabidiol101
Semaglutide101
Bupropion014
Nicotine Patch003

Coming up

2phase 3 studies under way
42studies 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 50 Tobacco Use studies recruiting now, 28 (56%) set no upper age limit and 18 (36%) stop at 75 or younger. 2 (4%) take children under 18. 3 (6%) are for women only and 0 (0%) for men only; 27 (54%) take healthy volunteers.

Recruiting studies that take each age, of 50
AgeWomenMen
101 (2%)1 (2%)
1825 (50%)22 (44%)
3042 (84%)39 (78%)
4045 (90%)42 (84%)
5047 (94%)44 (88%)
6546 (92%)43 (86%)
7533 (66%)30 (60%)
8529 (58%)26 (52%)

Across all 420 studies, recruiting or not: 43% stop at 75 or younger and 39% at 65; 14% take children; 3% are for women only and 3% for men only; 66% take healthy volunteers. From each study’s registry entry; the criteria on its page decide.

How long Tobacco Use studies take

Of 223 interventional studies with no phase under Tobacco Use, half reached primary completion within 16 months of starting, counting those still running.

Start to primary completionEvery sponsorIndustryNon-industry
Interventional, no phase16 mo5–33 · 223 studies2 mo1–5 · 56 studies24 mo12–41 · 167 studies
Observational44 mo4–216 · 28 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 recruiting5

Results posted2

Newly registered4

Studies

Recruiting first, then most recently updated. Showing 50 of 420. Browse all 420 → or search them.