Clinical trial Recruiting at 1 site Interventional Ages 21 to 65

Manipulating nicotine in e-cigarettes to improve public health

Official title: Manipulating E-Cigarette Nicotine to Promote Public Health

Run by Ohio State University Comprehensive Cancer Center · NCT06448351 · Data updated 2026-11-12

This study tests how different amounts and types of nicotine in e-cigarettes can affect addiction and health risks to help find safer options for smokers and young adults.

Quick facts

Study typeInterventional
Ages21 Years to 65 Years
SexAll
Enrollment375 (estimated)
SponsorOhio State University Comprehensive Cancer Center
Academic / other
Locations1 site (Columbus, Ohio)
StatusRecruiting
StartedMay 20, 2024
Main results expectedAugust 31, 2028
Study endsAugust 31, 2028
Registry record updatedAugust 14, 2026
Trial IDNCT06448351 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates include young adult exclusive e-cigarette users aged 21-24 and older adult smokers aged 25-65 interested in trying e-cigarettes.

Probably not a fit

Patients currently attempting to quit nicotine or tobacco products, or those with significant lung disease, may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This clinical trial investigates how different nicotine concentrations and forms in e-cigarettes affect addiction potential and health risks. Participants will engage in multiple vaping sessions using various e-liquid combinations to assess their pharmacological, metabolic, and behavioral responses. The study aims to identify optimal nicotine levels that minimize appeal to young adult users while still attracting smokers. Additionally, toxicity assessments will be conducted to understand the health implications of these nicotine variations.

Why it matters

Potential benefit: If successful, this study could lead to the development of e-cigarette products that reduce addiction potential and health risks for users.

How similar studies have gone: While there is ongoing research into nicotine's effects in e-cigarettes, this specific manipulation of nicotine dimensions is a novel approach.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Current exclusive young adult EC user for at least the past 3 months (confirmed by cotinine testing strip) between 21-24 years old with no/minimal history of smoking cigarettes (≤ 10 cigarettes in entire life)
* Current older adult smoker (daily use, ≥ 100 cigarettes in entire life) aged 25-65 with interest in trying an EC
* Willing to abstain from all nicotine, tobacco products, and marijuana for at least 12 hours for Study 1 and 2 hours for Study 2 before study visits
* Read, write, and speak English

Exclusion Criteria:

* Currently attempting to quit nicotine or tobacco products
* Currently pregnant (will be verified with urine pregnancy test), planning to become pregnant, or breastfeeding
* If age 21-24 years old AND use of any tobacco products other than ECs (use of \>10 cigarettes in entire life; use of \>10 traditional cigars, cigarillos, or filtered cigars in entire life; use of smokeless tobacco products \>10 times in entire life; or hookah in the last 30 days).
* Self-reported diagnosis of lung disease including asthma, cystic fibrosis, or chronic obstructive pulmonary disease
* New or unstable cardiovascular disease diagnosed within the past 3 months
* Use of medications that are inducers of CYP2A6 enzyme such as rifampicin, dexamethasone, phenobarbital, and other anti-convulsion drugs

Where it's running

  • Ohio State University Comprehensive Cancer Center
    Columbus, Ohio, United States
    Recruiting

Study contacts

  • Principal investigator: Theodore L Wagener — Ohio State University Comprehensive Cancer Center

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.