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NCT03766971
Influence of Tobacco Use on Cannabis Use
Phase 2 trial testing 7 days of Tobacco Cessation in Cannabis Use in 160 participants. Suspended.
30 November 2026
Quick facts
| Lead sponsor | New York State Psychiatric Institute |
|---|---|
| Phase | Phase 2 |
| Status | Suspended |
| Study type | INTERVENTIONAL |
| Allocation | randomized |
| Design | parallel |
| Masking | triple |
| Primary purpose | other |
| Enrollment | 160 |
| Start date | 1 February 2020 |
| Primary completion | 30 November 2026 |
| Estimated completion | 30 November 2027 |
| Sites | 1 location across United States |
Drugs / interventions tested
- 7 days of Tobacco Cessation
- 21 days of Tobacco Cessation
- Cannabis — full drug profile →
Conditions studied
- Cannabis Use — all drugs for Cannabis Use →
- Tobacco Use — all drugs for Tobacco Use →
Sponsor
New York State Psychiatric Institute
Who can join
Adults 18 to 60, any sex, with Cannabis Use or Tobacco Use. Patients with the condition only — healthy volunteers not accepted.
Sponsor's own description
Cannabis smokers who also smoke tobacco cigarettes have markedly higher rates of cannabis relapse relative to those who do not use tobacco. There is a clear need to develop and evaluate interventions for dual tobacco and cannabis users. The investigators of this study have previously shown that the co-use of tobacco cigarettes contributes to the maintenance of daily cannabis use, and that age of cigarette onset is a critical predictor of treatment outcome. Short-term tobacco cessation may suffice in altering cannabis relapse rates in later-onset cigarette smokers, while a longer period of tobacco cessation may be needed for earlier-onset smokers. In the current study, a human laboratory model will be utilized to determine whether cannabis relapse varies as a function of tobacco cessation duration and age of tobacco use onset.
Publications & conference data
No peer-reviewed publications indexed yet for this trial.
Verify or expand the search:
- PubMed search for NCT03766971
- Europe PMC full search
- ASCO Meeting Library
- ESMO Meeting Library
- bioRxiv preprints
- medRxiv preprints
- Google Scholar
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Other New York State Psychiatric Institute trials
Trials by the same sponsor.
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- NCT05563948 — Repeated Administration of Cannabis Varying in THC and CBD · Phase 2 · suspended
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Verify against primary sources
- ClinicalTrials.gov — authoritative US registry record
- WHO ICTRP — international registry index
- EU Clinical Trials Register
- Sponsor press releases (Google)
- Trial protocol + status: ClinicalTrials.gov NCT03766971 (US National Library of Medicine, public domain)
- Drug + disease cross-links: matched in real time against Drug Landscape's normalised drug + company + condition tables
- Sponsor: as reported to ClinicalTrials.gov by New York State Psychiatric Institute
- Last refreshed: 17 August 2025
Drug Landscape aggregates and links these public records for informational use only. Always verify against the primary source before clinical or regulatory decisions. Canonical URL: https://druglandscape.com/trial/NCT03766971.
Primary sources · FDA · ClinicalTrials.gov · EMA · SEC EDGAR · ChEMBL · Wikidata · full sourcing