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ClinicalTrials.gov public records Last synced Oct 19, 2026, 8:54 AM EDT

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Showing 1–24 of 480 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: ABSORPTION Clear all
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 4, 2018 · Synced Oct 19, 2026, 8:54 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Heme and Non-heme Iron Intakes, Gut Microbiota, and Influence on Host Iron Absorption

NCT06146608
View directory record Official record
Conditions
Anemia, Iron Deficiency, Iron Overload
Interventions
Not listed
Lead sponsor
Cornell University
Other
Eligibility
18 Years to 40 Years
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2026
U.S. locations
1
States / cities
Ithaca, New York
Source: ClinicalTrials.gov public record
Updated Feb 24, 2025 · Synced Oct 19, 2026, 8:54 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Study Evaluating Absorption, Distribution, Metabolism and Excretion (ADME) of Single Dose [14C]-BI 207127 in Healthy Male Volunteers

NCT01605461
View directory record Official record
Conditions
Healthy
Interventions
BI 207127 NA
Drug
Lead sponsor
Boehringer Ingelheim
Industry
Eligibility
18 Years to 55 Years · Male only
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Mar 21, 2016 · Synced Oct 19, 2026, 8:54 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study Evaluating The Absorption Of Varenicline Into The Body From A Varenicline Solution And A Varenicline Patch Applied To The Skin

NCT00774605
View directory record Official record
Conditions
Smoking Cessation
Interventions
Varenicline free base solution, Varenicline free base patch
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 55 Years · Male only
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Jan 26, 2009 · Synced Oct 19, 2026, 8:54 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of Lactose, Fructose, Sucrose, Whey Protein, and Soy Protein on Substrate Absorption and Oxidation: a Pilot Study

NCT00942513
View directory record Official record
Conditions
Substrate Absorption, Substrate Oxidation, Glucose Regulation
Interventions
trt 1, trt 2, trt 3, trt 4, trt 5, trt 6, trt 7
Other
Lead sponsor
United States Department of Agriculture (USDA)
Federal
Eligibility
25 Years to 65 Years · Male only
Enrollment
9 participants
Healthy volunteers
Accepts healthy volunteers
U.S. locations
1
States / cities
Beltsville, Maryland
Source: ClinicalTrials.gov public record
Updated Feb 9, 2011 · Synced Oct 19, 2026, 8:54 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Study to Evaluate Absorption, Metabolism and Excretion of Single-dose [14C]-Saroglitazar in Healthy Male Subjects

NCT04112446
View directory record Official record
Conditions
Healthy
Interventions
Saroglitazar magnesium
Drug
Lead sponsor
Zydus Therapeutics Inc.
Industry
Eligibility
18 Years to 55 Years · Male only
Enrollment
8 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Nov 13, 2019 · Synced Oct 19, 2026, 8:54 AM EDT
Completed Phase 1 Interventional

A Study of the Systemic Absorption of MOB015B

NCT03244280
View directory record Official record
Conditions
Onychomycosis
Interventions
MOB015B
Drug
Lead sponsor
Moberg Pharma AB
Industry
Eligibility
12 Years to 70 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated May 3, 2018 · Synced Oct 19, 2026, 8:54 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Open-Label Study of Safety of H1337 in Healthy Volunteers

NCT06572397
View directory record Official record
Conditions
Glaucoma Open-Angle Primary, Ocular Hypertension
Interventions
H-1337 1.0%
Drug
Lead sponsor
D. Western Therapeutics Institute, Inc.
Industry
Eligibility
18 Years and older
Enrollment
17 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024
U.S. locations
1
States / cities
Newport Beach, California
Source: ClinicalTrials.gov public record
Updated Feb 11, 2025 · Synced Oct 19, 2026, 8:54 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Phase 1, Open-label Study of the Absorption, Metabolism, and Excretion of [14C]-KW-6356

NCT04147910
View directory record Official record
Conditions
Healthy Male Subjects
Interventions
KW-6356
Drug
Lead sponsor
Kyowa Kirin, Inc.
Industry
Eligibility
18 Years to 65 Years · Male only
Enrollment
8 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Apr 25, 2024 · Synced Oct 19, 2026, 8:54 AM EDT
Completed Phase 4 Interventional

Study to Evaluate the Effects of Zemplar Injection and Calcijex on Intestinal Absorption of Calcium

NCT00073710
View directory record Official record
Conditions
Secondary Hyperparathyroidism, Chronic Kidney Disease
Interventions
Zemplar, 42 Ca carbonate absorption via single tracer method, Calcijex
Drug · Procedure
Lead sponsor
Abbott
Industry
Eligibility
20 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2004
U.S. locations
1
States / cities
Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated Aug 2, 2006 · Synced Oct 19, 2026, 8:54 AM EDT
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

Changes in Amino Acid Absorption After Adding a Probiotic to an Acute Protein Feeding

NCT06701604
View directory record Official record
Conditions
Amino Acid Absorption, Probiotic
Interventions
Single Strain Probiotic + Milk Protein, Placebo + Milk Protein
Dietary Supplement
Lead sponsor
The Archer-Daniels-Midland Company
Industry
Eligibility
18 Years to 35 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
1
States / cities
Belton, Texas
Source: ClinicalTrials.gov public record
Updated Nov 22, 2024 · Synced Oct 19, 2026, 8:54 AM EDT
Completed Not applicable Interventional Results available

A Pilot Study of Oxalate Absorption in Secondary Hyperoxaluria

NCT03095885
View directory record Official record
Conditions
Secondary Hyperoxaluria, Nephrolithiasis, Hyperoxaluria, Kidney Stones
Interventions
Test Meal
Other
Lead sponsor
Allena Pharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
5
States / cities
Tucson, Arizona • Little Rock, Arkansas • Shreveport, Louisiana + 2 more
Source: ClinicalTrials.gov public record
Updated Oct 28, 2021 · Synced Oct 19, 2026, 8:54 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Investigation Of Absorption And Pharmacokinetics Of A Single Dose Of Controlled Release Pregabalin Tablet Administered Fasted At Bedtime Or Immediately Following A 400-500 or 600-750 Calorie Evening Meal As Compared To Single Dose Of Immediate Release Pregabalin Capsule In Healthy Volunteers

NCT01291524
View directory record Official record
Conditions
Healthy
Interventions
Pregabalin controlled release, 330 mg, 400 to 500 calorie, Pregabalin controlled release, 330 mg, 600- 750 calorie, Pregabalin controlled release, 330 mg, bedtime, Pregabalin immediate release, 300 mg
Drug
Lead sponsor
Pfizer's Upjohn has merged with Mylan to form Viatris Inc.
Industry
Eligibility
18 Years to 55 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Jan 22, 2021 · Synced Oct 19, 2026, 8:54 AM EDT
Completed Not applicable Interventional

Iron Absorption in The Low Oxygen Exposure and Weight Status (LOWS) Study

NCT07542873
View directory record Official record
Conditions
Obesity (Disorder)
Interventions
Normobaric hypoxia (NH), Normobaric normoxia (NN)
Other
Lead sponsor
Pennington Biomedical Research Center
Other
Eligibility
22 Years to 65 Years
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Baton Rouge, Louisiana
Source: ClinicalTrials.gov public record
Updated Oct 5, 2026 · Synced Oct 19, 2026, 8:54 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Mass Balance Study of [14C]LC350189 in Healthy Volunteers

NCT04070846
View directory record Official record
Conditions
Gout, Hyperuricemia
Interventions
[14C] LC350189
Drug
Lead sponsor
LG Chem
Industry
Eligibility
18 Years to 55 Years · Male only
Enrollment
6 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Jun 26, 2020 · Synced Oct 19, 2026, 8:54 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Bioequivalence Study on Vitamin C in Healthy Adults

NCT03562988
View directory record Official record
Conditions
Dietary Exposure
Interventions
Vitamin C gummy, Vitamin C tablet
Dietary Supplement
Lead sponsor
Church & Dwight Company, Inc.
Industry
Eligibility
18 Years to 55 Years
Enrollment
35 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017
U.S. locations
1
States / cities
Princeton, New Jersey
Source: ClinicalTrials.gov public record
Updated Aug 23, 2021 · Synced Oct 19, 2026, 8:54 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Study of Radiolabeled ALXN2050 in Healthy Adult Males

NCT04609670
View directory record Official record
Conditions
Healthy
Interventions
[14C]-ALXN2050
Drug
Lead sponsor
Alexion Pharmaceuticals, Inc.
Industry
Eligibility
19 Years to 55 Years · Male only
Enrollment
9 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
1
States / cities
Lincoln, Nebraska
Source: ClinicalTrials.gov public record
Updated Jan 25, 2023 · Synced Oct 19, 2026, 8:54 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Long-term Nutritional Intervention Study to Determine How Protein Affects Calcium Metabolism

NCT00671944
View directory record Official record
Conditions
Osteoporosis
Interventions
Low protein diet
Other
Lead sponsor
Yale University
Other
Eligibility
20 Years to 40 Years · Female only
Enrollment
11 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2003 – 2010
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Mar 31, 2020 · Synced Oct 19, 2026, 8:54 AM EDT
Completed Not applicable Interventional Results available

Calcium Absorption in Patients With Rothmund-Thomson Syndrome

NCT01304407
View directory record Official record
Conditions
Rothmund-Thomson Syndrome
Interventions
Calcium stable isotope
Other
Lead sponsor
Baylor College of Medicine
Other
Eligibility
4 Years and older
Enrollment
29 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2017
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jul 23, 2020 · Synced Oct 19, 2026, 8:54 AM EDT
Recruiting Not applicable Interventional

GI Oxalate Absorption

NCT05356000
View directory record Official record
Conditions
Bariatric Surgery Candidate, Kidney Stone
Interventions
Special low-oxalate diet followed by all-day visit to University of Chicago research clinic
Other
Lead sponsor
University of Chicago
Other
Eligibility
18 Years to 70 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Aug 19, 2025 · Synced Oct 19, 2026, 8:54 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study to Investigate How the Study Drug SHP626 is Eliminated From the Body After One Dose

NCT02571192
View directory record Official record
Conditions
Non-Alcoholic Steatohepatitis
Interventions
SHP626, 5.95 μCi RAD
Drug · Radiation
Lead sponsor
Mirum Pharmaceuticals, Inc.
Industry
Eligibility
18 Years to 50 Years · Male only
Enrollment
8 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated May 1, 2019 · Synced Oct 19, 2026, 8:54 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study To Investigate The Absorption, Metabolism And Excretion Of [14C] PD 0200390 In Six Healthy Male Volunteers

NCT00722306
View directory record Official record
Conditions
Insomnia
Interventions
PD 0200390
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 65 Years
Enrollment
6 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Feb 4, 2011 · Synced Oct 19, 2026, 8:54 AM EDT
Completed Not applicable Interventional

Immune Activation and Drug Absorption in HIV-Infected Patients

NCT01845298
View directory record Official record
Conditions
HIV Infection
Interventions
Rifampicin 600 mg
Drug
Lead sponsor
Drexel University
Other
Eligibility
21 Years to 45 Years
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 3, 2017 · Synced Oct 19, 2026, 8:54 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

AirSeal®Insufflation Trocar/CO2 Absorption Study

NCT02654808
View directory record Official record
Conditions
Gynecologic Diseases
Interventions
AirSeal trocar, Standard trocar
Device
Lead sponsor
Columbia University
Other
Eligibility
18 Years and older · Female only
Enrollment
132 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Sep 16, 2021 · Synced Oct 19, 2026, 8:54 AM EDT