# Broccoli Sprout/Broccoli Seed Extract Supplement in Decreasing Toxicity in Heavy Smokers

> **NCT03402230** · EARLY_PHASE1 · COMPLETED · sponsor: **National Cancer Institute (NCI)** · enrollment: 49 (actual)

## Conditions studied

- Cigarette Smoking-Related Carcinoma
- Tobacco-Related Carcinoma

## Interventions

- **DRUG:** Broccoli Sprout/Broccoli Seed Extract Supplement
- **OTHER:** Laboratory Biomarker Analysis
- **OTHER:** Questionnaire Administration

## Key facts

- **NCT ID:** NCT03402230
- **Lead sponsor:** National Cancer Institute (NCI)
- **Sponsor class:** NIH
- **Phase:** EARLY_PHASE1
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2018-02-20
- **Primary completion:** 2020-01-10
- **Final completion:** 2022-07-24
- **Target enrollment:** 49 (ACTUAL)
- **Last updated:** 2023-06-28


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT03402230

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT03402230, "Broccoli Sprout/Broccoli Seed Extract Supplement in Decreasing Toxicity in Heavy Smokers". Retrieved via AI Analytics 2026-05-25 from https://api.ai-analytics.org/clinical/NCT03402230. Licensed CC0.

---

*[Clinical trials dataset](/datasets/clinical-trials) · CC0 1.0*