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Vaping clinical trials

The registry lists 402 studies for Vaping across more than 10 countries. 95 are recruiting or about to start. 206 of them are mainly about Vaping (how this is decided). Per ClinicalTrials.gov, last updated 2026-11-10.

Get an email when these change. Save the Vaping 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

One email a week for all your saved searches. Stop any time.

Status

Completed
246
Recruiting
64
Not yet recruiting
24
Terminated
17
Status unknown
16
Withdrawn
15

Phase

Phase 2
21
Phase 3
14
Phase 4
14
Early Phase 1
12
Phase 1
10

Where

United States
286
Canada
13
United Kingdom
13
Italy
7
France
7
Sweden
5

Who runs them

Yale University (22) · University of Southern California (19) · University of California, San Francisco (16) · Virginia Commonwealth University (14) · Medical University of South Carolina (9) · Juul Labs, Inc. (9) · University of Vermont (8) · Massachusetts General Hospital (8)

What is being tested here

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

DrugOpenPhase 3All
Nicotine7320
Varenicline307
Nicotine Patch316
Cannabis sativa subsp. indica TOP213
Cytisine113
Salicylsalicylic acid101
Cycloserine101
Dronabinol101
Bupropion022
Zonisamide022

Coming up

6phase 3 studies under way
40studies finish main data collection within a year2 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 64 Vaping studies recruiting now, 32 (50%) set no upper age limit and 31 (48%) stop at 75 or younger. 13 (20%) take children under 18. 2 (3%) are for women only and 0 (0%) for men only; 40 (63%) take healthy volunteers.

Recruiting studies that take each age, of 64
AgeWomenMen
102 (3%)2 (3%)
1840 (63%)38 (59%)
3048 (75%)46 (72%)
4044 (69%)42 (66%)
5040 (63%)39 (61%)
6539 (61%)38 (59%)
7533 (52%)32 (50%)
8533 (52%)32 (50%)

Across all 402 studies, recruiting or not: 59% stop at 75 or younger and 55% at 65; 19% take children; 1% are for women only and 2% for men only; 73% take healthy volunteers. From each study’s registry entry; the criteria on its page decide.

How long Vaping studies take

Of 16 phase 2 interventional studies under Vaping, half reached primary completion within 19 months of starting, counting those still running.

Start to primary completionEvery sponsorIndustryNon-industry
Phase 219 mo15–37 · 16 studies——
Interventional, no phase18 mo6–31 · 208 studies2 mo1–6 · 24 studies20 mo9–35 · 184 studies
Observational36 mo32–46 · 32 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.

Results posted2

Stopped1

Newly registered7

Show 2 more

Studies

Recruiting first, then most recently updated. Showing 50 of 402. Browse all 402 → or search them.