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Showing 1–16 of 16 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: S-equol Clear all
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 3, 2026, 4:54 PM EDT
Completed Phase 2 Interventional Results available

Efficacy and Safety of S-equol on Vasomotor Symptoms in Menopausal Patients

NCT00962585
View directory record Official record
Conditions
Menopause
Interventions
Placebo, S-equol
Drug
Lead sponsor
Ausio Pharmaceuticals, LLC
Industry
Eligibility
Female only
Enrollment
169 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
5
States / cities
Louisville, Kentucky • Cincinnati, Ohio • Cleveland, Ohio + 2 more
Source: ClinicalTrials.gov public record
Updated Apr 7, 2014 · Synced Sep 3, 2026, 4:54 PM EDT
Completed Not applicable Interventional

Soy Nut Study on Markers of Health

NCT01173380
View directory record Official record
Conditions
Metabolic Syndrome X
Interventions
Soy nuts, Matched food
Other
Lead sponsor
University of California, Davis
Other
Eligibility
21 Years and older
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
1
States / cities
Davis, California
Source: ClinicalTrials.gov public record
Updated May 29, 2017 · Synced Sep 3, 2026, 4:54 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

A Nutritional Supplement on Vasomotor Symptoms in Women

NCT04516304
View directory record Official record
Conditions
Menopause
Interventions
Placebo, S-equol
Dietary Supplement
Lead sponsor
Pharmavite LLC
Industry
Eligibility
40 Years to 65 Years · Female only
Enrollment
118 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Addison, Illinois
Source: ClinicalTrials.gov public record
Updated Apr 3, 2024 · Synced Sep 3, 2026, 4:54 PM EDT
Completed Phase 2 Interventional Results available

Efficacy and Safety of S-Equol on Men With Benign Prostatic Hyperplasia

NCT00962390
View directory record Official record
Conditions
Benign Prostatic Hyperplasia
Interventions
S-equol, Placebo
Drug
Lead sponsor
Ausio Pharmaceuticals, LLC
Industry
Eligibility
50 Years and older · Male only
Enrollment
116 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2016
U.S. locations
5
States / cities
Huntsville, Alabama • Aventura, Florida • Clearwater, Florida + 2 more
Source: ClinicalTrials.gov public record
Updated May 18, 2017 · Synced Sep 3, 2026, 4:54 PM EDT
Recruiting Phase 2 Interventional Accepts healthy volunteers

Acute Equol Supplementation and Vascular Function in Women With and Without CKD

NCT06128278
View directory record Official record
Conditions
Chronic Kidney Diseases, Vascular Function, Women
Interventions
S-equol, Placebo
Drug · Other
Lead sponsor
University of Colorado, Denver
Other
Eligibility
50 Years to 69 Years · Female only
Enrollment
38 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2026
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Sep 29, 2025 · Synced Sep 3, 2026, 4:54 PM EDT
Completed Early Phase 1 Interventional

S-equol in Women With Triple Negative Breast Cancer

NCT02352025
View directory record Official record
Conditions
Breast Cancer
Interventions
S-equol
Drug
Lead sponsor
The University of Texas Health Science Center at San Antonio
Other
Eligibility
18 Years and older · Female only
Enrollment
39 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2020
U.S. locations
1
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Jul 21, 2020 · Synced Sep 3, 2026, 4:54 PM 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 3, 2026, 4:54 PM EDT
Active, not recruiting Phase 2 Interventional Accepts healthy volunteers

Effect of Equol Supplementation on Arterial Stiffness and Cognition in Healthy Volunteers

NCT05741060
View directory record Official record
Conditions
Arterial Stiffness, White Matter Lesions, Cognitive Decline
Interventions
S-equol, Placebo
Drug
Lead sponsor
Akira Sekikawa
Other
Eligibility
65 Years to 85 Years
Enrollment
369 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2027
U.S. locations
3
States / cities
Atlanta, Georgia • Winston-Salem, North Carolina • Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 19, 2026 · Synced Sep 3, 2026, 4:54 PM EDT
Completed Phase 1Phase 2 Interventional Results available

S-Equol in Alzheimer's Disease 2 Trial

NCT03101085
View directory record Official record
Conditions
Alzheimer Disease
Interventions
S-equol and Placebo, Placebo and S-equol
Drug
Lead sponsor
Russell Swerdlow
Other
Eligibility
50 Years to 90 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2021
U.S. locations
2
States / cities
Fairway, Kansas • Kansas City, Kansas
Source: ClinicalTrials.gov public record
Updated Jul 24, 2024 · Synced Sep 3, 2026, 4:54 PM 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 3, 2026, 4:54 PM 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 3, 2026, 4:54 PM EDT
Not listed Phase 1Phase 2 Interventional Accepts healthy volunteers

A Novel Combination Oral Agent to Treat Acne Vulgaris

NCT01301586
View directory record Official record
Conditions
ACNE VULGARIS
Interventions
Doxycycline and S-equol, Doxycycline
Drug
Lead sponsor
Nexgen Dermatologics, Inc.
Industry
Eligibility
13 Years to 60 Years · Female only
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2011
U.S. locations
2
States / cities
Rolling Hills Estates, California • Boynton Beach, Florida
Source: ClinicalTrials.gov public record
Updated Feb 22, 2011 · Synced Sep 3, 2026, 4:54 PM EDT
Completed Phase 1 Interventional

S-Equol in Alzheimer's Disease (SEAD) Trial

NCT02142777
View directory record Official record
Conditions
Alzheimer's Disease
Interventions
S -Equol, Placebo
Drug
Lead sponsor
Russell Swerdlow, MD
Other
Eligibility
60 Years to 90 Years · Female only
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
1
States / cities
Kansas City, Kansas
Source: ClinicalTrials.gov public record
Updated Aug 15, 2016 · Synced Sep 3, 2026, 4:54 PM EDT
Active, not recruiting Phase 2 Interventional Accepts healthy volunteers

PhytoSERM to Prevent Menopause Associated Decline in Brain Metabolism and Cognition

NCT05664477
View directory record Official record
Conditions
Menopause, Cognitive Change, Brain Disorder, Metabolic
Interventions
PhytoSERM, Placebo
Dietary Supplement · Drug
Lead sponsor
Roberta Brinton
Other
Eligibility
45 Years to 60 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2027
U.S. locations
2
States / cities
Tucson, Arizona • New York, New York
Source: ClinicalTrials.gov public record
Updated Mar 12, 2026 · Synced Sep 3, 2026, 4:54 PM EDT
Not listed Phase 2 Interventional

PhytoSERM for Menopausal Hot Flashes and Sustained Brain Health

NCT06186531
View directory record Official record
Conditions
Menopause, Hot Flashes
Interventions
PhytoSERM, Placebo
Dietary Supplement · Drug
Lead sponsor
NeuTherapeutics
Industry
Eligibility
45 Years to 60 Years · Female only
Enrollment
132 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
Tucson, Arizona
Source: ClinicalTrials.gov public record
Updated Jan 1, 2024 · Synced Sep 3, 2026, 4:54 PM EDT