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NCT04053868

Evaluating the Comparative Pharmacokinetics of Nicotine After Administration Via JUUL or Tobacco Cigarettes

Completed NA Results posted Last updated 16 October 2025
What this trial tests

NA trial testing JUUL in Nicotine Administration & Dosage in 17 participants. Completed in 31 March 2022.

Timeline
9 December 2019
Primary endpoint
31 March 2022
31 March 2022

Quick facts

Lead sponsorUniversity of California, San Francisco
PhaseNA
StatusCompleted
Study typeINTERVENTIONAL
Allocationrandomized
Designcrossover
Maskingnone
Primary purposebasic science
Enrollment17
Start date9 December 2019
Primary completion31 March 2022
Estimated completion31 March 2022
Sites2 locations across United States

Drugs / interventions tested

Conditions studied

Sponsor

University of California, San Francisco

Who can join

Adults 21 to 70, any sex, with Nicotine Administration & Dosage or E-cigarettes. Patients with the condition only — healthy volunteers not accepted.

Results — posted to ClinicalTrials.gov

Per-arm endpoint measurements with 95% confidence intervals where reported. Source: trial results section.

Mean Nicotine Exposure Primary · Plasma collected at baseline (prior to any product use) and at 2, 5, 7, 10, 15, 30, 60, 90, and 118 minutes after end of standardized session.

Plasma nicotine area under the concentrated time curve (AUC) (ng/ml\*h)

GroupValue95% CI
E-cigarette (JUUL)4.6± 2.2
Tobacco Cigarette9.2± 5.8
Overall Mean Heart Rate Over Time Secondary · Up to 118 minutes after end of standardized session.

Participant heart rate will be measured in beats per minute (bpm) at baseline (before any use of products) and at 2, 5, 7, 10, 15, 30, 45, 60, 75, 90, 100,and 118 minutes after the standardized sessions of e-cigarette and tobacco cigarette use. The mean of each time point will be averaged over time.

GroupValue95% CI
E-cigarette (JUUL)69.4± 11.6
Tobacco Cigarette73.4± 13.1
Mean Systolic Blood Pressure Over Time Secondary · Up to 118 minutes after end of standardized session.

Participant systolic blood pressure will be taken at Baseline (prior to use of any product) and at 5, 10, 15, 30, 45, 60, 75, 90, 100, and 118 minutes after the standardized sessions of e-cigarette and/or tobacco cigarette use on each arm. The mean of each time point will be averaged over time.

GroupValue95% CI
E-cigarette (JUUL)123± 12.3
Tobacco Cigarette122± 11.8
Mean Diastolic Blood Pressure Over Time Secondary · Up to 118 minutes after end of standardized session.

Participant diastolic blood pressure will be taken at Baseline (prior to use of any product) and at 5, 10, 15, 30, 45, 60, 75, 90, 100, and 118 minutes after the standardized session during e-cigarette and/or tobacco cigarette use on each arm. The mean of each time point will be averaged over time.

GroupValue95% CI
E-cigarette (JUUL)75.6± 12
Tobacco Cigarette76.9± 10.6
Mean Questionnaire of Smoking Urges (QSU) and Modified for E-cigarettes (mQSU) Score Over Time Secondary · Up to 118 minutes after end of standardized session

The QSU (Questionnaire of Smoking Urges) is a self-report survey, modified to replace "cigarette" with "e-cigarette" and "smoking" with "vaping" for use during both the tobacco cigarette and the E-cigarette Arm. This instrument is composed of 10 items; 5 items measuring desire/intention to smoke/vape with smoking/vaping perceived as rewarding (Factor 1), and 5 items measuring anticipation of relief from negative affect with an urgent desire to smoke/vape (Factor 2). Scores for each factor (1 and 2) range from 5-35 with higher scores indicating more severe craving. The mean and standard deviati

Factor 1: desire/intention to smoke/vape with smoking/vaping perceived as rewarding
GroupValue95% CI
E-cigarette (JUUL)20.9± 9.62
Tobacco Cigarette19.0± 9.96
Factor 2: anticipation of relief from negative affect with an urgent desire to smoke/vape
GroupValue95% CI
E-cigarette (JUUL)13.5± 8.72
Tobacco Cigarette11.3± 8.28
Mean Minnesota Nicotine Withdrawal Scale (MNWS) Score Over Time Secondary · Up to 118 minutes after end of standardized session.

The Minnesota Nicotine Withdrawal Scale is an 15-item self -report scale designed to measure the severity of craving and withdrawal symptoms experienced during smoking cessation. Each item is on a scale of 0 to 4 with 0=none to 4=Severe. The responses to each item are summed to produce a total withdrawal summary score with a possible range between 0 and 60, with higher scores indicating greater withdrawal symptom severity with greater scores indicating a higher level of severity in nicotine withdrawal symptoms overall. The mean and standard deviation will be reported.

GroupValue95% CI
E-cigarette (JUUL)12± 8.75
Tobacco Cigarette11± 8.03
Mean Cigarette Evaluation Scale (CES) and Modified for E-cigarettes (mCES) Score Over Time Secondary · Up to 240 minutes after end of standardized session

The CES is a self-report survey measuring smoking/vaping satisfaction, psychological reward, aversion, sensations, and craving reduction. This 12-item instrument has a total score range from 12 to 84, with higher scores indicating higher perception of the above factors. The mean and standard deviation will be reported.

GroupValue95% CI
E-cigarette (JUUL)49.5± 12.87
Tobacco Cigarette47.7± 14.18

Adverse events — posted to ClinicalTrials.gov

Time frame: Up to 1 month.. Reporting threshold: 5%. Adverse-event reports describe events observed during the trial — not all are caused by the drug.

Electronic Cigarette
Serious: 0/16 (0%)
Deaths: 0/16
Tobacco Cigarette
Serious: 0/16 (0%)
Deaths: 0/16
Other adverse events (2 terms — click to expand)

ReactionSystemElectronic CigaretteTobacco Cigarette
coughRespiratory, thoracic and mediastinal disorders
vertigoEar and labyrinth disorders

Data from ClinicalTrials.gov NCT04053868 adverse events section.

Sponsor's own description

This is an observational, crossover design that will examine the pharmacokinetics and pharmacodynamics of impact of smoking tobacco cigarettes or vaping the JUUL electronic cigarette.

Publications & conference data

No peer-reviewed publications indexed yet for this trial. Completed trials usually publish results within 12-18 months.

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Other trials of JUUL

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