# Understanding the Clinical Pharmacology of Marijuana-Tobacco Co-administration

> **NCT05999383** · PHASE2 · RECRUITING · sponsor: **University of California, San Francisco** · enrollment: 48 (estimated)

## Conditions studied

- THC
- Cannabis
- Cannabis Use
- Cannabis Smoking
- Tobacco Use
- Vaping

## Interventions

- **DRUG:** Cannabis
- **DRUG:** Nicotine
- **DEVICE:** Pax Loose Leaf Vaporizer
- **OTHER:** Placebo Marijuana

## Key facts

- **NCT ID:** NCT05999383
- **Lead sponsor:** University of California, San Francisco
- **Sponsor class:** OTHER
- **Phase:** PHASE2
- **Study type:** INTERVENTIONAL
- **Status:** RECRUITING
- **Start date:** 2025-07-01
- **Primary completion:** 2028-02-01
- **Final completion:** 2028-02-01
- **Target enrollment:** 48 (ESTIMATED)
- **Last updated:** 2026-01-07

## Collaborators

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## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT05999383

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT05999383, "Understanding the Clinical Pharmacology of Marijuana-Tobacco Co-administration". Retrieved via AI Analytics 2026-06-25 from https://api.ai-analytics.org/clinical/NCT05999383. Licensed CC0.

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