# Effectiveness of Combination Varenicline and Oral Nicotine Replacement Therapy (COMBO)

> **NCT03722966** · PHASE2 · TERMINATED · sponsor: **University of Oklahoma** · enrollment: 34 (actual)

## Conditions studied

- Smoking Cessation

## Interventions

- **DRUG:** Varenicline
- **DRUG:** Oral Nicotine Replacement Therapy (NRT)
- **BEHAVIORAL:** Medication Reminders
- **BEHAVIORAL:** Tobacco Cessation Counseling

## Key facts

- **NCT ID:** NCT03722966
- **Lead sponsor:** University of Oklahoma
- **Sponsor class:** OTHER
- **Phase:** PHASE2
- **Study type:** INTERVENTIONAL
- **Status:** TERMINATED
- **Start date:** 2020-01-07
- **Primary completion:** 2022-02-07
- **Final completion:** 2022-02-07
- **Target enrollment:** 34 (ACTUAL)
- **Why stopped:** Following the Chantix recall, Pfizer stopped providing medication for the study and and new study enrollments were discontinued.
- **Last updated:** 2024-02-06

## Collaborators

- [object Object]

## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT03722966

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT03722966, "Effectiveness of Combination Varenicline and Oral Nicotine Replacement Therapy (COMBO)". Retrieved via AI Analytics 2026-06-02 from https://api.ai-analytics.org/clinical/NCT03722966. Licensed CC0.

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