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Trial · NCT04188106

Efficacy and Tolerability of Combination Varenicline With Hydroxyzine as a Potential Smoking Cessation Treatment

NCT04188106, Phase 4, Completed, Rose Research Center, LLC; results first posted 2023-03-03

3 sourcestrials-2026-11-12-0.5.0

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ConductScience Library. Efficacy and Tolerability of Combination Varenicline With Hydroxyzine as a Potential Smoking Cessation Treatment. Trials, record NCT04188106. Release trials-2026-11-12-0.5.0, 12 Nov 2026. https://conductscience.org/library/trials/NCT04188106

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Trial

As registered on ClinicalTrials.gov, in the graph's capture of the registry.

Title
Efficacy and Tolerability of Combination Varenicline With Hydroxyzine as a Potential Smoking Cessation Treatment
NCT number
NCT04188106
Status
Completed
Phases
Phase 4
Enrollment
26 participants, actual
Lead sponsor
Rose Research Center, LLC
Conditions
Smoking Cessation, Stress, Sleep Disturbance, Nausea
Interventions
Varenicline Pill, Hydroxyzine Pill
First posted
2019-12-05
Last updated
2023-03-03
Results first posted
2023-03-03

Source ClinicalTrials.gov

Registered outcomes5

Each outcome the trial registered, primary first, in ClinicalTrials.gov's words.

ListOutcomeTime frameDescription
PrimaryChange in 10-item Perceived Stress Scale (PSS-10) Following Smoking Cessation (While Taking Arenicline and Hydroxyzine).Weeks 1, 2, 4, 8, 12
Stress levels in the last 30 days will be measured using the 10-item Perceived Stress Scale (PSS-10). The PSS-10 uses a 5-point scale (0 - never, 1 = almost never, 2 = once in a while, 3 = often, 4 = very often). Total scores range from 0 to 40. * Scores ranging from 0-13 would be considered low stress. * Scores ranging from 14-26 would be considered moderate stress. * Scores ranging from 27-40 would be considered high perceived stress.
PrimaryChanges in Anxiety Using the 6-item State-Trait Anxiety Inventory (STAI)Weeks 1, 2, 4, 8, 12
Trait and state anxiety levels will be monitored for changes using the 6-item State-Trait Anxiety Inventory (STAI). All items are rated on a 4-point scale ("1-Almost Never" to "4-Almost Always"). The range of scores is from 6 to 24. Higher scores indicate greater anxiety.
PrimaryChanges in Depression Using the Patient Health Questionnaire (PHQ-9)Weeks 1, 2, 4, 8, 12
Depression will be monitored for changes using the Patient Health Questionnaire (PHQ-9). The PHQ-9 uses a 4-point scale (Not at all = 0; Several days = 1;More than half the days = 2; Nearly every day = 3). The sum of the scores is calculated (Score range is 0 to 27): * 1-4 Minimal depression * 5-9 Mild depression * 10-14 Moderate depression * 15-19 Moderately severe depression * 20-27 Severe depression
SecondaryEffects of Varenicline on Self-reported Smoking Reduction Prior to the Quit Date7 Days
Previous research has shown that abstinence at the end of treatment is strongly predicted by the extent to which smokers spontaneously reduce ad libitum smoking in the initial weeks of pharmacotherapy that is initiated before the quit-smoking date. This measure will assess the extent of smoking reduction in participants during the initial seven days of treatment (prior to their planned quit date) - assessed via a self-report number of cigarettes per day. Data is recorded as a mean change.
SecondaryEffects of Varenicline on Self-reported Smoking Reduction Prior to the Quit Date7 Days
Previous research has shown that abstinence at the end of treatment is strongly predicted by the extent to which smokers spontaneously reduce ad libitum smoking in the initial weeks of pharmacotherapy that is initiated before the quit-smoking date. This measure will assess the extent of smoking reduction in participants during the initial seven days of treatment (prior to their planned quit date) - assessed via expired air carbon monoxide (CO). Data is recorded as a mean change.

Outcomes5

Each outcome the trial posted results for, in ClinicalTrials.gov's words.

TypeOutcomeTime framePopulationUnitsMeasured as
PRIMARYChange in 10-item Perceived Stress Scale (PSS-10) Following Smoking Cessation (While Taking Arenicline and Hydroxyzine).Weeks 1, 2, 4, 8, 12The number of participants changes based on dropouts.score on a scaleMEAN
PRIMARYChanges in Anxiety Using the 6-item State-Trait Anxiety Inventory (STAI)Weeks 1, 2, 4, 8, 12The number of participants changes based on dropouts.score on a scaleMEAN
PRIMARYChanges in Depression Using the Patient Health Questionnaire (PHQ-9)Weeks 1, 2, 4, 8, 12The number of participants changes based on dropouts.score on a scaleMEAN
SECONDARYEffects of Varenicline on Self-reported Smoking Reduction Prior to the Quit Date7 DaysThe participants are divided as to whether they were successful in quitting smoking combustible cigarettes.Cigs smoked per dayMEAN
SECONDARYEffects of Varenicline on Self-reported Smoking Reduction Prior to the Quit Date7 DaysThe participants are divided as to whether they were successful in quitting smoking combustible cigarettes.CO in ppmMEAN

Results by group19

Each measurement the trial posted, group by group, in the words and numbers it posted.

OutcomeGroupCategoryValueSpreadUnits
Change in 10-item Perceived Stress Scale (PSS-10) Following Smoking Cessation (While Taking Arenicline and Hydroxyzine).Hydroxyzine and VareniclineChange in PPS-10 from BL to Week 1-1.38Standard Deviation 2.37score on a scale
Change in 10-item Perceived Stress Scale (PSS-10) Following Smoking Cessation (While Taking Arenicline and Hydroxyzine).Hydroxyzine and VareniclineChange in PPS-10 from BL to Week 2-1.48Standard Deviation 3score on a scale
Change in 10-item Perceived Stress Scale (PSS-10) Following Smoking Cessation (While Taking Arenicline and Hydroxyzine).Hydroxyzine and VareniclineChange in PPS-10 from BL to Week 4-1.55Standard Deviation 2.65score on a scale
Change in 10-item Perceived Stress Scale (PSS-10) Following Smoking Cessation (While Taking Arenicline and Hydroxyzine).Hydroxyzine and VareniclineChange in PPS-10 from BL to Week 8-2.05Standard Deviation 3.58score on a scale
Change in 10-item Perceived Stress Scale (PSS-10) Following Smoking Cessation (While Taking Arenicline and Hydroxyzine).Hydroxyzine and VareniclineChange in PPS-10 from BL to Week 12-2.75Standard Deviation 3.43score on a scale
Changes in Anxiety Using the 6-item State-Trait Anxiety Inventory (STAI)Hydroxyzine and VareniclineChange in STAI from BL to Week 1-0.54Standard Deviation 2.67score on a scale
Changes in Anxiety Using the 6-item State-Trait Anxiety Inventory (STAI)Hydroxyzine and VareniclineChange in STAI from BL to Week 2-1.09Standard Deviation 3.79score on a scale
Changes in Anxiety Using the 6-item State-Trait Anxiety Inventory (STAI)Hydroxyzine and VareniclineChange in STAI from BL to Week 4-0.86Standard Deviation 4.54score on a scale
Changes in Anxiety Using the 6-item State-Trait Anxiety Inventory (STAI)Hydroxyzine and VareniclineChange in STAI from BL to Week 8-1.82Standard Deviation 3.35score on a scale
Changes in Anxiety Using the 6-item State-Trait Anxiety Inventory (STAI)Hydroxyzine and VareniclineChange in STAI from BL to Week 12-1.65Standard Deviation 3.59score on a scale

Participant flow3

How many started, completed or left each group, period by period.

PeriodMilestoneGroupParticipantsUnits counted
Overall StudySTARTEDHydroxyzine and Varenicline26
Overall StudyCOMPLETEDHydroxyzine and Varenicline20
Overall StudyNOT COMPLETEDHydroxyzine and Varenicline6

Adverse events7

Each adverse event the trial posted, group by group: the participants affected out of those at risk.

TypeEventOrgan systemGroupAffectedAt riskEvents
otherHypersomnolenceNervous system disordersHydroxyzine and Varenicline92611
otherNauseaGastrointestinal disordersHydroxyzine and Varenicline102610
otherInsomniaNervous system disordersHydroxyzine and Varenicline9269
otherMood ChangesPsychiatric disordersHydroxyzine and Varenicline7267
otherHeadacheNervous system disordersHydroxyzine and Varenicline5265
otherElevated blood pressureCardiac disordersHydroxyzine and Varenicline4264
otherVivid dreamsNervous system disordersHydroxyzine and Varenicline4264

Adverse event totals3

The totals the trial posted for each group.

TotalGroupAffectedAt risk
Total, all-cause mortalityHydroxyzine and Varenicline026
Total, other adverse eventsHydroxyzine and Varenicline2126
Total, serious adverse eventsHydroxyzine and Varenicline026

Papers0

The papers the trial lists on ClinicalTrials.gov.

None in this release.

Grants0

The grants NIH RePORTER links to the trial, newest funded first: NIH's, and some of AHRQ's, CDC's, FDA's and VA's. Each shows its title, principal investigators, organization and funder in its newest year.

None in this release.

Trial comparisons0

Comparisons of the trial's two groups, calculated by ConductScience from the counts it posted.

None in this release.

Tests0

The ConductCognition tests this trial's registered outcomes name, as ScienceGraph matched them in trial-tests-2026-11-12-0.2.1.

None in this release.

Data dates

The day each source was copied for this release.

ClinicalTrials.gov
2026-11-12
ClinicalTrials.gov
Results, from AACT
2026-03-23
AACT
NIH grant links
2026-11-13
NIH RePORTER

Sources 3

  • ClinicalTrials.gov's posted results, through CTTI's AACTFreely available. Acknowledgement requested
  • ClinicalTrials.govNo license stated
  • NIH RePORTER's clinical studies and project filesPublic domain
Each source's terms
  • ClinicalTrials.gov's posted results, through CTTI's AACTClinicalTrials.gov data via Aggregate Analysis of ClinicalTrials.gov (AACT), CTTI. CTTI makes its materials freely available and requests acknowledgement. https://aact.ctti-clinicaltrials.org/documentation/299
  • ClinicalTrials.govnone stated
  • NIH RePORTER's clinical studies and project filesPublic domain (NIH RePORTER)

ClinicalTrials.gov's data carry an international copyright outside the United States: https://clinicaltrials.gov/about-site/terms-conditions.

For software

Read this trial from software.

The record and each of its lists are JSON, twenty rows a page. No key.

GET https://conductscience.org/api/trials/v1/NCT04188106

GET https://conductscience.org/api/trials/v1/NCT04188106/registered