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Flavor test: do E-Cigarette tastes hook smokers differently by age?

NCT ID NCT03635333

Knowledge-focused Sponsor: Yale University Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study looked at how flavors in e-cigarettes affect how much adult smokers like and want them. It included 130 smokers aged 21-50 who used only e-cigarettes for two weeks. The goal was to measure their reactions, not to treat or cure any condition.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Phase 1

The first testing in people. Mainly checks safety and dose, usually in a small group.

Participants

130 people

The number who actually took part.

Started

May 2019

Finished

Jul 2023

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

21 to 50 years

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Ages 21-34 years or 35 -50 years * Able to read and write * Smoking \>/= 1 cigarettes or cigars/day * Willing to abstain from regular smoking for 2 weeks and use only e-cigarettes * Not seeking treatment to stop smoking Exclusion Criteria: * Daily use of other drugs including prescribed psychoactive drugs * Any significant current medical or psychiatric condition * Known hypersensitivity to propylene glycol * Pregnant or lactating females

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Conditions

The condition(s) this trial relates to.

nicotine dependence

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Nicotine use disorder

Contacts and locations

Locations

  • CMHC, Substance Abuse Center

    New Haven, Connecticut, 06519, United States

More trials for these conditions

Other studies related to the condition(s) this trial covers.