Crick
HomeTrialsGenesDrugs23andMeGraphBlogContact
  • Home
  • Trials
  • Genes
  • Drugs
  • 23andMe
  • Graph
  • Blog
  • Contact
Crick

An open-source clinical intelligence platform. Explore clinical trials, gene networks, and molecular structures using public data sources.

Data Sources

  • ClinicalTrials.gov
  • OpenTargets
  • ClinVar
  • PubChem

Links

  • Contact
  • About
  • Privacy

© 2026 Crick. All rights reserved.

Crick is for educational purposes only. Not medical advice.

Results for “Heavy Smokers”

30 trials

Filters

Phase
Early Phase 1
Phase 1
Phase 2
Phase 3
Phase 4
Status
Recruiting
Active, Not Recruiting
Not Yet Recruiting
Completed
Enrolling by Invitation

Showing 20 of 30 results

Not applicableStudy completedNCT01284660
What this trial is testing

Docosahexaenoic Acid (DHA) Effects on Cognitive Function, Craving and Psychosocial Factors in Heavy Cigarette Smokers

Who this might be right for
HEAVY TOBACCO SMOKERS
Hillel Yaffe Medical Center 51
Testing effectiveness (Phase 2)Looking for participantsNCT05121051
What this trial is testing

Testing the Effect of the Broccoli Seed and Sprout Extract, Avmacol ES, on the Cancer Causing Substances of Tobacco in Heavy Smokers

Who this might be right for
Cigarette Smoking-Related Carcinoma
National Cancer Institute (NCI) 135
Not applicableStudy completedNCT07241624
What this trial is testing

Isometric Versus Isotonic Trunk Muscle Strength Training on Lung Function in Heavy Smokers

Who this might be right for
Smokers
MTI University 90
Testing effectiveness (Phase 2)Study completedNCT00860028
What this trial is testing

Varenicline for Smoking Cessation in Heavy Drinking Smokers

Who this might be right for
Nicotine DependenceSmokingHeavy Drinking
Yale University 30
Large-scale testing (Phase 3)Study completedNCT00359645
What this trial is testing

Randomized Trial to Assess the Impact of a Screening Program on Upper Aerodigestive Tract Cancer Mortality in a High Risk Population

Who this might be right for
Pharynx CancerLarynx CancerOral Cavity Cancer+1 more
Gustave Roussy, Cancer Campus, Grand Paris 1,993
Post-approval studies (Phase 4)Study completedNCT00605605
What this trial is testing

Vascular Endothelial Protection Effects of Dextromethorphan

Who this might be right for
AtherosclerosisSmokingInflammation
National Cheng-Kung University Hospital 40
Not applicableStudy completedNCT02113852
What this trial is testing

Study of Blood, Tumor and Adjacent Normal Tissue Samples From Chinese Smoking Induced Lung Cancer Patients

Who this might be right for
Non Small Cell Lung Cancer
Guangdong Association of Clinical Trials 250
Testing effectiveness (Phase 2)Study completedNCT00103363
What this trial is testing

Sputum Cytology in Screening Heavy Smokers For Lung Cancer

Who this might be right for
Lung Cancer
University of Colorado, Denver 3,270
Very early researchStudy completedNCT02058784
What this trial is testing

Study to Evaluate the Food Effect of Single-dose Bioavailability of Pracinostat in Healthy Adult Subjects

Who this might be right for
Healthy VolunteersModerate to Heavy SmokersNon-smokers
Helsinn Healthcare SA 28
Early research (Phase 1)Study completedNCT00342836
What this trial is testing

Analysis of Tissues From Patients in Trial of Myo-Inositol to Prevent Lung Cancer

Who this might be right for
AKT
National Cancer Institute (NCI) 20
Not applicableUnknownNCT03814434
What this trial is testing

Surgical Treatment of Periimplantitis in Patients With Risk Factors

Who this might be right for
Peri-ImplantitisType 2 Diabetes MellitusSmoking, Cigarette+1 more
Luiz Antonio Pugliesi Alves de Lima 40
Testing effectiveness (Phase 2)Study completedNCT00055978
What this trial is testing

Celecoxib in Preventing Lung Cancer in Former Heavy Smokers

Who this might be right for
Lung Cancer
University of California, Los Angeles 112
Not applicableUnknownNCT02422914
What this trial is testing

Benefits of Tobacco Free Cigarette

Who this might be right for
Cigarette SmokingSmoking Cessation
University of Milan 210
Very early researchStudy completedNCT03402230
What this trial is testing

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

Who this might be right for
Cigarette Smoking-Related CarcinomaTobacco-Related Carcinoma
National Cancer Institute (NCI) 49
Testing effectiveness (Phase 2)Study completedNCT00403117
What this trial is testing

Effects of a Range of Naltrexone Doses in Combination With Smoked Marijuana

Who this might be right for
Marijuana Use
New York State Psychiatric Institute 49
Testing effectiveness (Phase 2)UnknownNCT03936621
What this trial is testing

Efficacy and Safety of Omega 3 Fatty Acid Supplements on Heavy Smokers

Who this might be right for
Lung Cancer
British Columbia Cancer Agency 42
Not applicableStudy completedNCT07003893
What this trial is testing

Efficacy of Diaphragmatic Proprioceptive Neuromuscular Facilitation on Functional Capacity and Pulmonary Function in Heavy Twenties Smokers

Who this might be right for
Smoking DependenceSmoking Among Youth
Al-Zaytoonah University of Jordan 40
Testing effectiveness (Phase 2)Study completedNCT01677169
What this trial is testing

Effect of Noni Juice on Lipid Peroxidation-derived DNA Adducts in Heavy Smokers

Who this might be right for
DNA Damage
Tahitian Noni International, Inc. 317
Post-approval studies (Phase 4)Study completedNCT00861276
What this trial is testing

Nicotine Substitute Prescribed at Hourly Intake or ad Libitum for Heavy Smokers Willing to Quit

Who this might be right for
Smoking Cessation
University of Lausanne 50
Not applicableWithdrawnNCT05639790
What this trial is testing

The Effectiveness of Using E-Cigarettes for Smoking Cessation and Decreasing Risk of Diseases Among Heavy Smokers

Who this might be right for
Smoking Cessation
Shenzhen Smoore Technology Limited
Load More Results