# Hookah Smoking, Carbon Monoxide, and Coronary Endothelial Function

> **NCT03166787** · PHASE1 · TERMINATED · sponsor: **Cedars-Sinai Medical Center** · enrollment: 60 (actual)

## Conditions studied

- Smoking
- Endothelial Dysfunction

## Interventions

- **OTHER:** Charcoal hookah
- **OTHER:** E-coal hookah
- **OTHER:** Cigarette
- **DRUG:** Carbon Monoxide inhalation
- **OTHER:** Room Air inhalation
- **DRUG:** vitamin C
- **DRUG:** tadalafil

## Key facts

- **NCT ID:** NCT03166787
- **Lead sponsor:** Cedars-Sinai Medical Center
- **Sponsor class:** OTHER
- **Phase:** PHASE1
- **Study type:** INTERVENTIONAL
- **Status:** TERMINATED
- **Start date:** 2017-08-15
- **Primary completion:** 2020-04-15
- **Final completion:** 2020-10-15
- **Target enrollment:** 60 (ACTUAL)
- **Why stopped:** Due to the Pandemic and the nature of this study we decided to terminate this study.
- **Last updated:** 2021-04-09

## Collaborators

- [object Object]
- [object Object]

## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT03166787

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT03166787, "Hookah Smoking, Carbon Monoxide, and Coronary Endothelial Function". Retrieved via AI Analytics 2026-05-25 from https://api.ai-analytics.org/clinical/NCT03166787. Licensed CC0.

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