# Influence of Tobacco Use on Cannabis Use

> **NCT03766971** · PHASE2 · SUSPENDED · sponsor: **New York State Psychiatric Institute** · enrollment: 160 (estimated)

## Conditions studied

- Cannabis Use
- Tobacco Use

## Interventions

- **BEHAVIORAL:** 7 days of Tobacco Cessation
- **BEHAVIORAL:** 21 days of Tobacco Cessation
- **DRUG:** Cannabis

## Key facts

- **NCT ID:** NCT03766971
- **Lead sponsor:** New York State Psychiatric Institute
- **Sponsor class:** OTHER
- **Phase:** PHASE2
- **Study type:** INTERVENTIONAL
- **Status:** SUSPENDED
- **Start date:** 2020-02-01
- **Primary completion:** 2026-11-30
- **Final completion:** 2027-11-30
- **Target enrollment:** 160 (ESTIMATED)
- **Why stopped:** In response to quality assurance and compliance concerns, OHRP issued an FWA restriction on NYSPI research that included a pause of human research as of June 23, 2023.
- **Last updated:** 2025-08-17

## Collaborators

- [object Object]

## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT03766971

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT03766971, "Influence of Tobacco Use on Cannabis Use". Retrieved via AI Analytics 2026-06-03 from https://api.ai-analytics.org/clinical/NCT03766971. Licensed CC0.

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