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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Isoflavones Clear all
Completed Early Phase 1 Interventional

Genistein and Interleukin-2 in Treating Patients With Metastatic Melanoma or Kidney Cancer

NCT00276835
View directory record Official record
Conditions
Kidney Cancer, Melanoma (Skin)
Interventions
High-dose interleukin-2, genistein
Biological · Dietary Supplement
Lead sponsor
Northwestern University
Other
Eligibility
18 Years and older
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2014
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Apr 9, 2015 · Synced Sep 23, 2026, 1:40 AM EDT
Recruiting Phase 2 Interventional

Equol and Vascular Function in Women With Chronic Kidney Disease

NCT07194590
View directory record Official record
Conditions
Chronic Kidney Disease (Stage 3-4), Vascular Function, Cognitive Functions, Cerebrovascular Function, Blood Pressure
Interventions
Equol, Placebo
Drug
Lead sponsor
University of Colorado, Denver
Other
Eligibility
50 Years and older · Female only
Enrollment
74 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2030
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Jun 1, 2026 · Synced Sep 23, 2026, 1:40 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Soy Nuts and Cardiovascular Risk in Postmenopausal Women

NCT01740076
View directory record Official record
Conditions
Postmenopausal Women
Interventions
soy nuts
Other
Lead sponsor
Beth Israel Deaconess Medical Center
Other
Eligibility
21 Years and older · Female only
Enrollment
84 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2001 – 2012
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 21, 2025 · Synced Sep 23, 2026, 1:40 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Multi-Dose Safety and Pharmacokinetic Study of S-Equol in Healthy Volunteers

NCT00998920
View directory record Official record
Conditions
Healthy
Interventions
S-equol, Placebo
Drug
Lead sponsor
Ausio Pharmaceuticals, LLC
Industry
Eligibility
18 Years to 65 Years
Enrollment
41 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2009
U.S. locations
1
States / cities
Tacoma, Washington
Source: ClinicalTrials.gov public record
Updated Jul 11, 2012 · Synced Sep 23, 2026, 1:40 AM EDT
Completed Phase 2 Interventional Results available

Alzheimer's Disease: Potential Benefit of Isoflavones

NCT00205179
View directory record Official record
Conditions
Alzheimer's Disease
Interventions
Novasoy, Placebo
Drug
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
55 Years and older
Enrollment
72 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2009
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Jan 21, 2020 · Synced Sep 23, 2026, 1:40 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety and Pharmacokinetic Study of S-Equol in Healthy Volunteers

NCT00787007
View directory record Official record
Conditions
Healthy
Interventions
S-equol, Placebo
Drug
Lead sponsor
Ausio Pharmaceuticals, LLC
Industry
Eligibility
18 Years to 65 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008
U.S. locations
1
States / cities
Tacoma, Washington
Source: ClinicalTrials.gov public record
Updated Jan 19, 2012 · Synced Sep 23, 2026, 1:40 AM EDT
Completed Not applicable Interventional Results available

Dietary Supplementation With Soy Isoflavones in Asthma

NCT00277446
View directory record Official record
Conditions
Asthma
Interventions
Soy isoflavones
Drug
Lead sponsor
Northwestern University
Other
Eligibility
18 Years to 50 Years
Enrollment
13 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2007
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Feb 24, 2011 · Synced Sep 23, 2026, 1:40 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Isoflavones for Promoting Calcium Absorption and Preventing Bone Loss in Post Menopausal Women

NCT00244907
View directory record Official record
Conditions
Osteoporosis, Osteopenia
Interventions
Genistein vs Risedronate
Dietary Supplement
Lead sponsor
Purdue University
Other
Eligibility
Female only
Enrollment
23 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2010
U.S. locations
1
States / cities
West Lafayette, Indiana
Source: ClinicalTrials.gov public record
Updated May 3, 2018 · Synced Sep 23, 2026, 1:40 AM EDT
Completed Phase 2 Interventional

Examination of a Soy-Based Supplement for Major Depression

NCT00042380
View directory record Official record
Conditions
Depression
Interventions
Novasoy
Drug
Lead sponsor
National Institute of Mental Health (NIMH)
NIH
Eligibility
Not listed
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2005
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 3, 2008 · Synced Sep 23, 2026, 1:40 AM EDT
Completed Phase 2 Interventional Results available

Cholecalciferol and Genistein Before Surgery in Treating Patients With Early Stage Prostate Cancer

NCT01325311
View directory record Official record
Conditions
Prostate Adenocarcinoma, Stage I Prostate Cancer, Stage IIA Prostate Cancer, Stage IIB Prostate Cancer
Interventions
Cholecalciferol, Genistein, Laboratory Biomarker Analysis, Pharmacological Study, Placebo
Drug · Other
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years and older · Male only
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2014
U.S. locations
11
States / cities
Birmingham, Alabama • Baltimore, Maryland • Burlington, Massachusetts + 6 more
Source: ClinicalTrials.gov public record
Updated Aug 2, 2016 · Synced Sep 23, 2026, 1:40 AM EDT
Completed Phase 2 Interventional

Isoflavones and Acute-phase Response in Chronic Renal Failure

NCT00029796
View directory record Official record
Conditions
Kidney Failure, Chronic
Interventions
soy isoflavones
Drug
Lead sponsor
National Center for Complementary and Integrative Health (NCCIH)
NIH
Eligibility
18 Years to 70 Years
Enrollment
52 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Ends 2003
U.S. locations
1
States / cities
Lexington, Kentucky
Source: ClinicalTrials.gov public record
Updated Mar 21, 2013 · Synced Sep 23, 2026, 1:40 AM EDT
Withdrawn Phase 1 Interventional

Genistein in Treating Patients With Stage II, Stage III, or Stage IV Prostate Cancer

NCT00005827
View directory record Official record
Conditions
Prostate Cancer
Interventions
genistein
Dietary Supplement
Lead sponsor
UNC Lineberger Comprehensive Cancer Center
Other
Eligibility
40 Years and older · Male only
Healthy volunteers
Healthy volunteers not accepted
Timeline
1999 – 2003
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Apr 23, 2012 · Synced Sep 23, 2026, 1:40 AM EDT
Terminated Not applicable Interventional

Soy Modulation of Immune Activation, LDL- Levels, and Lowering Inflammation by Pretzel Isoflavone Dietary Intervention

NCT02818283
View directory record Official record
Conditions
Human Immunodeficiency Virus (HIV) Infection, Hypercholesterolemia
Interventions
Soy Pretzel, Wheat Pretzel
Dietary Supplement · Other
Lead sponsor
Ohio State University
Other
Eligibility
18 Years and older
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2023
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Oct 5, 2023 · Synced Sep 23, 2026, 1:40 AM EDT
Completed Phase 2Phase 3 Interventional Accepts healthy volunteers

Effects of Soy Isoflavones on Menopausal Hot Flashes

NCT00179556
View directory record Official record
Conditions
Menopausal Symptoms
Interventions
Isoflavone supplement
Drug
Lead sponsor
Beth Israel Deaconess Medical Center
Other
Eligibility
38 Years to 65 Years · Female only
Enrollment
210 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2003 – 2005
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 13, 2017 · Synced Sep 23, 2026, 1:40 AM EDT
Completed Not applicable Interventional

Soy Isoflavones in Treating Patients With Recurrent Prostate Cancer or Rising Prostate-Specific Antigen

NCT01682941
View directory record Official record
Conditions
Recurrent Prostate Cancer, Stage IV Prostate Cancer
Interventions
Arm I Soy Bread, Arm II Soy-Almond Bread
Dietary Supplement
Lead sponsor
Ohio State University Comprehensive Cancer Center
Other
Eligibility
Male only
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2023
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Nov 21, 2023 · Synced Sep 23, 2026, 1:40 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

BIO 300 Oral Powder Safety and Pharmacokinetics

NCT04650555
View directory record Official record
Conditions
Acute Radiation Syndrome
Interventions
BIO 300 Oral Powder
Drug
Lead sponsor
Humanetics Corporation
Industry
Eligibility
18 Years to 64 Years
Enrollment
34 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Saint Paul, Minnesota
Source: ClinicalTrials.gov public record
Updated May 2, 2024 · Synced Sep 23, 2026, 1:40 AM EDT
Terminated Phase 2 Interventional Results available

Soy Derivatives for Control of Hot Flashes in Men on Androgen Deprivation Therapy

NCT00594620
View directory record Official record
Conditions
Prostate Cancer
Interventions
Flav-ein capsules, Placebo
Dietary Supplement · Drug
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
18 Years and older · Male only
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2010
U.S. locations
1
States / cities
Kansas City, Kansas
Source: ClinicalTrials.gov public record
Updated Feb 13, 2022 · Synced Sep 23, 2026, 1:40 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Investigation of the Effect of BONISTEIN(R) Bone Blend on Bone Mineral Density/Content and Biomarkers of Bone Health

NCT00698984
View directory record Official record
Conditions
Osteoporosis
Interventions
BONISTEIN(R) bone blend, Placebo
Dietary Supplement
Lead sponsor
dsm-firmenich Switzerland AG
Industry
Eligibility
45 Years to 55 Years · Female only
Enrollment
70 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2009
U.S. locations
1
States / cities
Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated Jan 15, 2009 · Synced Sep 23, 2026, 1:40 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Gut Microbial Metabolites of Apple Polyphenols

NCT06107192
View directory record Official record
Conditions
Healthy, Controlled Feeding Trial
Interventions
Dietary intervention - apple catechin diet, Dietary intervention - low catechin diet
Other
Lead sponsor
University of Maryland, College Park
Other
Eligibility
18 Years to 45 Years
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2025
U.S. locations
1
States / cities
College Park, Maryland
Source: ClinicalTrials.gov public record
Updated Jun 21, 2025 · Synced Sep 23, 2026, 1:40 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Soy and Isoflavones Effect on Bone

NCT00668447
View directory record Official record
Conditions
Osteoporosis
Interventions
Soy Isolate, Control protein, Novasoy isoflavones, Placebo tablets
Dietary Supplement
Lead sponsor
United States Department of Agriculture (USDA)
Federal
Eligibility
65 Years and older · Female only
Enrollment
97 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2001 – 2005
U.S. locations
1
States / cities
Farmington, Connecticut
Source: ClinicalTrials.gov public record
Updated Apr 28, 2008 · Synced Sep 23, 2026, 1:40 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Genistein in Preventing Breast or Endometrial Cancer in Healthy Postmenopausal Women

NCT00099008
View directory record Official record
Conditions
Breast Cancer, Endometrial Cancer
Interventions
Genistein, Placebo
Dietary Supplement
Lead sponsor
UNC Lineberger Comprehensive Cancer Center
Other
Eligibility
45 Years to 70 Years · Female only
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2006
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated May 20, 2013 · Synced Sep 23, 2026, 1:40 AM EDT
Completed Not applicable Interventional

Isoflavones & Lycopene in Localized Prostate Ca:Prior to Radical Prostatectomy

NCT00042731
View directory record Official record
Conditions
Prostate Cancer
Interventions
Lycopene, Multivitamin, Soy isoflavones
Dietary Supplement
Lead sponsor
H. Lee Moffitt Cancer Center and Research Institute
Other
Eligibility
45 Years to 80 Years · Male only
Enrollment
79 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2006
U.S. locations
5
States / cities
Phoenix, Arizona • Tampa, Florida • Savannah, Georgia + 2 more
Source: ClinicalTrials.gov public record
Updated Sep 23, 2012 · Synced Sep 23, 2026, 1:40 AM EDT
Completed Phase 2 Interventional Results available

Soy Isoflavones in Preventing Head and Neck Cancer Recurrence in Patients With Stage I-IV Head and Neck Cancer Undergoing Surgery

NCT02007200
View directory record Official record
Conditions
Recurrent Hypopharyngeal Squamous Cell Carcinoma, Recurrent Laryngeal Squamous Cell Carcinoma, Recurrent Laryngeal Verrucous Carcinoma, Recurrent Lip and Oral Cavity Squamous Cell Carcinoma, Recurrent Oral Cavity Verrucous Carcinoma, Recurrent Oropharyngeal Squamous Cell Carcinoma, Stage I Hypopharyngeal Squamous Cell Carcinoma, Stage I Laryngeal Squamous Cell Carcinoma, Stage I Laryngeal Verrucous Carcinoma, Stage I Lip and Oral Cavity Squamous Cell Carcinoma, Stage I Oral Cavity Verrucous Carcinoma, Stage I Oropharyngeal Squamous Cell Carcinoma, Stage II Hypopharyngeal Squamous Cell Carcinoma, Stage II Laryngeal Squamous Cell Carcinoma, Stage II Laryngeal Verrucous Carcinoma, Stage II Lip and Oral Cavity Squamous Cell Carcinoma, Stage II Oral Cavity Verrucous Carcinoma, Stage II Oropharyngeal Squamous Cell Carcinoma, Stage III Hypopharyngeal Squamous Cell Carcinoma, Stage III Laryngeal Squamous Cell Carcinoma, Stage III Laryngeal Verrucous Carcinoma, Stage III Lip and Oral Cavity Squamous Cell Carcinoma, Stage III Oral Cavity Verrucous Carcinoma, Stage III Oropharyngeal Squamous Cell Carcinoma, Stage IV Hypopharyngeal Squamous Cell Carcinoma, Stage IVA Laryngeal Squamous Cell Carcinoma, Stage IVA Laryngeal Verrucous Carcinoma, Stage IVA Lip and Oral Cavity Squamous Cell Carcinoma, Stage IVA Oral Cavity Verrucous Carcinoma, Stage IVA Oropharyngeal Squamous Cell Carcinoma, Tongue Carcinoma
Interventions
Laboratory Biomarker Analysis, Soy Isoflavones, Survey Administration
Other · Drug
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
19 Years to 79 Years
Enrollment
55 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2015
U.S. locations
3
States / cities
Atlanta, Georgia • Ann Arbor, Michigan • Detroit, Michigan
Source: ClinicalTrials.gov public record
Updated Oct 23, 2016 · Synced Sep 23, 2026, 1:40 AM EDT
Withdrawn Not applicable Interventional Accepts healthy volunteers

Effect of Lycopene and Isoflavones on Glucose Metabolism

NCT01377961
View directory record Official record
Conditions
Metabolic Syndrome, Diabetes Mellitus, Non-Insulin-Dependent
Interventions
Randomized pills either containing combination of lycopene and isoflavones (dietary supplements) or Placebo to be taken for 12 weeks, Screening, OGTT, Anthropometrics and Blood pressure, Blood Drawing
Drug · Other
Lead sponsor
The University of Texas Medical Branch, Galveston
Other
Eligibility
18 Years to 75 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2015
U.S. locations
2
States / cities
Galveston, Texas
Source: ClinicalTrials.gov public record
Updated Jun 25, 2015 · Synced Sep 23, 2026, 1:40 AM EDT