Clinical Research Directory
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218 clinical studies listed.
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Tundra lists 218 Healthy Participants clinical trials. Each listing includes eligibility criteria, study locations, and direct links to research sites in the Tundra directory.
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NCT07534592
A Study to Investigate the Effect of Elecoglipron on Rosuvastatin and Atorvastatin in Healthy Participants
The study has 2 groups, one each focusing on co-administration of elecoglipron and atorvastatin or rosuvastatin to assess the pharmacokinetics (PK) of atorvastatin in healthy participants.
Gender: All
Ages: 18 Years - 55 Years
Updated: 2026-08-28
2 states
NCT07791342
A Phase I Study of 9MW4113 Injection Versus Dupixent®
It is a randomized, double-blinded, parallel, single-dose, Phase I comparative study to evaluate the pharmacokinetic, safety, and immunogenicity similarity between 9MW4113 and Dupixent® in healthy Chinese adult participants. A total of 208 healthy participants are planned to be included and randomized at a ratio of 1:1 to receive single 300mg/2.0ml 9MW4113 injection or Dupixent®.
Gender: All
Ages: 18 Years - 50 Years
Updated: 2026-08-27
1 state
NCT07190313
Massage: Neuroimaging and Correlates of Response - 1-week Study
This study will compare the effects (good or bad) of Swedish massage or light touch therapy on your brain activity, physical responses (like heart rate, blood pressure, breathing rate), and mood and stress. This is a randomized research study. "Randomized" means that participants will be assigned to a study group by chance, like flipping a coin. Participants will be randomized into one of two study groups, and will have an equal chance of being placed in one of the groups: - A single session of Swedish massage therapy - A single session of Light touch therapy At the study visit, the study staff ask about life stressors, medical health, medicine use, and illicit substance use over the past week. The study uses magnetic resonance imaging (MRI) as well as functional MRI (fMRI) to look at the structure and activation of the brain. Participants will undergo two brain scanning sessions, one immediately before and one immediately after the Swedish massage or light touch therapy. The scans will last approximately 45 minutes. During the brain scanning sessions, information on heart rate, blood pressure, temperature and breathing will also be collected.
Gender: All
Ages: 18 Years - 64 Years
Updated: 2026-08-27
1 state
NCT06961747
A Study to Assess Zilucoplan Concentration in Breast Milk of Healthy Lactating Women
The purpose of this study is to assess the steady state (SS) concentrations of zilucoplan (ZLP) and its major metabolites in mature breast milk of healthy study participants following injection of repeated once-daily doses of ZLP.
Gender: FEMALE
Ages: 18 Years - Any
Updated: 2026-08-27
2 states
NCT07307794
To Evaluate the Adhesion of TK-254RX on Healthy Participants
This study is a single-center, open-label, multiple-dose trial in healthy participants. The primary purpose of this study is to assess the adhesion of TK-254RX. Secondary purposes are to assess the safety of TK-254RX and the residual amount of the patch.
Gender: All
Ages: 18 Years - 64 Years
Updated: 2026-08-27
1 state
NCT07745907
A Phase 1 Trial of AMG 691 in Healthy Chinese and Japanese Volunteers
The trial is designed to evaluate the pharmacokinetics, safety, tolerability, and immunogenicity of AMG 691 in healthy Chinese and Japanese participants
Gender: All
Ages: 18 Years - 60 Years
Updated: 2026-08-27
1 state
NCT06951880
A Study to Investigate the Safety and Pharmacokinetics of Single- and Multiple-ascending Doses of AZD4916 in Healthy Volunteers
The main purpose of this study is to assess the safety, tolerability, pharmacokinetics (PK) of AZD4916 in healthy adult participants.
Gender: All
Ages: 18 Years - 55 Years
Updated: 2026-08-26
1 state
NCT07782593
Satiety, Microbiome, Appetite Regulation, and Tracking Energy Across Targeted Snacks: Chronic Study
The goal of this clinical trial is to learn how eating different snack foods affects long term hunger and gut health in healthy adults. The study will be conducted remotely over 7 weeks. The main questions it aims to answer are: 1. Does eating a snack bar intervention for 4-weeks change how hungry participants feel throughout the day compared to a control? 2. Does eating a snack bar intervention change gut microbiome, bowel habits, digestive symptoms, and other health measures compared to a control over 4 weeks? Researchers will compare an intervention snack bar to a control snack bar to see if the intervention improves hunger, gut microbiome, digestive symptoms and other health measures. Participants will: * Eat 2 snack bars in place of their usual snacks every day for 4 weeks * Complete health measurements at the start and end of the study: a health questionnaire, 3-day food diary, 3-day hunger \& satiety survey, body measurements, and a stool sample * Fill out a short online survey (under 5 minutes) once a week
Gender: All
Ages: 35 Years - 65 Years
Updated: 2026-08-26
NCT06980428
A Study to Investigate Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of AZD4954 in Healthy Adult Participants With or Without Elevated Lipoprotein (a) (Lp[a]) Levels, and Participants With Dyslipidemia
The purpose of the study is to evaluate the safety, tolerability, pharmacokinetics (PK), and pharmacodynamics (PD) of single and multiple ascending doses of AZD4954 in healthy participants with or without elevated Lipoprotein(a) (Lp\[a\]) levels and participants with dyslipidemia.
Gender: All
Ages: 18 Years - 70 Years
Updated: 2026-08-24
4 states
NCT07783503
A Drug-drug Interaction Study to Assess the Effect of Phenytoin and Itraconazole on the Pharmacokinetics of Pelabresib in Healthy Participants
The purpose of this study is to assess the effect of multiple doses of phenytoin, a strong cytochrome P450 (CYP)3A4 inducer, and itraconazole, a strong CYP3A4 inhibitor, on the pharmacokinetic (PK) profile of DAK539 (hereafter referred to as pelabresib) after a single dose in healthy participants. In addition, the safety and tolerability of a single dose of pelabresib with and without the co-administration of itraconazole or phenytoin will be evaluated.
Gender: All
Ages: 18 Years - 55 Years
Updated: 2026-08-24
NCT07328568
Effect of Low Volume Sprint Interval Training on Cardiorespiratory Fitness
Low levels of physical activity (PA) are related to poor health and greater risk of premature death in adults. Lack of time is cited as a primary barrier to partaking in PA. In the last 20 years, a lot of attention has been directed towards the efficacy of high intensity interval training (HIIT), which consists of brief, intense bursts of PA separated by recovery. One primary benefit of HIIT is a sizable increase in cardiorespiratory fitness (CRF), which enables adults to exercise better and reduce health risks due to the strong link between health status and CRF. Completion of cardiovascular exercise is typically recommended for all adults to increase CRF, yet it takes a lot of time and may be perceived as boring. Alternatively, HIIT requires less time and tends to cause greater feelings of enjoyment in many adults. Hundreds of studies report an increase in CRF in response to HIIT in various groups of adults ranging from athletes and those with obesity, diabetes, cancer, stroke, and even spinal cord injury, which emphasizes the potency of this vigorous form of PA. Yet, many studies are weakened by a small sample size which questions the feasibility of these findings. This randomized controlled trial will test the efficacy and feasibility of a very small amount of HIIT, referred to as reduced exertion high intensity interval training (REHIT), in inactive adults. In the proposed study, REHIT will consist of 2 days per week of 1 to two 10 - 20 second sprints on a stationary bike. The proposed sample will include 60 adults who complete 18 sessions of REHIT over a 9 week period, and their responses will be compared to a non exercising control group. During the study, changes in CRF, fuel metabolism, and psychological responses will be monitored, with the latter outcome shedding light on the overall feasibility of HIIT in inactive adults. Overall, this novel study has profound public health applications as it will assess fitness and health related changes to a small dose of PA in the largest sample to date. If substantial changes in CRF are shown, these data have the potential to modify public health guidelines for implementing PA in inactive adults.
Gender: All
Ages: 18 Years - 55 Years
Updated: 2026-08-24
1 state
NCT07035769
A First-in-Human Study to Evaluate Safety, Tolerability, and Pharmacokinetics of Single and Multiple Oral Doses of Debio 1453P in Healthy Adults
The main purpose of this study is to evaluate the safety, tolerability and pharmacokinetics (PK) of Debio 1453P compared to placebo across different dose levels in healthy adults after single and repeated oral dosing.
Gender: All
Ages: 18 Years - 55 Years
Updated: 2026-08-24
NCT07776418
Satiety, Microbiome, Appetite Regulation, and Tracking Energy Across Targeted Snacks: Acute Postprandial Study
The goal of this clinical trial is to learn how eating different snack foods affects acute hunger, energy intake and eating behaviour in healthy adults. The study will be conducted remotely over 5 days. The main questions it aims to answer are: 1. Does eating a snack bar intervention change how hungry participants feel later in the same day? 2. Does eating a snack bar intervention change participants' energy intake, nutrient intake and eating behaviour on the same day? 3. Does eating a snack bar intervention change participants mood, energy levels and alertness later in the same day? Researchers will compare an intervention snack bar to a control snack bar to see if the intervention improves hunger, energy intake, eating behaviour, and other subjective measures. Participants will: * Eat 2 snack bars for breakfast on 2 separate days, with 2 days in between * Not eat anything after 9pm the night before each test day * Fill out short online surveys (under 5 minutes) before breakfast and at set times over the next 3 hours * Not eat for 3 hours after breakfast * Write down everything they eat that day
Gender: All
Ages: 35 Years - 65 Years
Updated: 2026-08-24
NCT07300189
A Study to Evaluate Single and Multiple Doses of TLC-1180 in Healthy Subjects
This phase 1 study is designed to evaluate the safety, tolerability, pharmacokinetics (PK), and pharmacodynamics (PD) of TLC-1180 after single- and multiple-ascending doses in healthy subjects.
Gender: All
Ages: 18 Years - 55 Years
Updated: 2026-08-21
NCT07487740
A Food Effect Study to Evaluate the Relative Bioavailability of Nalbuphine Extended-Release Tablets (NAL ER) in Healthy Participants
The primary purpose of this study is to evaluate the effect of a high-fat, high-calorie meal on the relative bioavailability of NAL ER following single oral doses.
Gender: All
Ages: 18 Years - 60 Years
Updated: 2026-08-21
1 state
NCT07222254
A Study to Assess the Safety, Tolerability, and Pharmacokinetics of a Single Ascending Dose of AZD0292 in Healthy Japanese Participants
The purpose of the study is to evaluate the safety, tolerability and pharmacokinetics (PK) of single ascending doses of AZD0292 administered via intravenous (IV) infusion in healthy Japanese participants.
Gender: All
Ages: 18 Years - 60 Years
Updated: 2026-08-20
NCT07758595
A Study to Evaluate the Safety, Pharmacokinetics, and Pharmacodynamics of DNL921 in Healthy Participants and Participants With Alzheimer's Disease
This is a Phase 1/1b, multicenter, randomized, placebo-controlled, double-blind study to evaluate the safety, tolerability, pharmacokinetics (PK), and pharmacodynamics (PD) of single and multiple doses of DNL921 in healthy participants and participants with Alzheimer's disease (AD). The principal aim of this study is to obtain safety and tolerability data. This information, together with PK and PD data, will inform dose selection and design of future studies.
Gender: All
Ages: 18 Years - 75 Years
Updated: 2026-08-20
NCT07775261
A Trial of Lu AH69593 in Healthy Participants
This trial will evaluate the effects of itraconazole (Part A) and, carbamazepine (Part B) on Lu AH69593, and the effect of Lu AH69593 on midazolam (Part C) in adult healthy participants. The main goals of this trial are to learn about 1. the effect of other medicines on Lu AH69593 2. the pharmacokinetic parameters of Lu AH69593 (how the drug is absorbed, distributed, and processed by the body), and 3. the safety and tolerability of Lu AH69593.
Gender: All
Ages: 18 Years - 55 Years
Updated: 2026-08-20
NCT07225959
A Study of Annual Doses of MK-1406/CD388 in Healthy Adults (MK-1406-006/CD388.SQ.2.07)
The goal of this clinical study is to learn if giving repeated annual doses of MK-1406 (CD388) is safe and how the body reacts to it in healthy adults who have already received one dose without serious side effects. The study aims to determine if the body makes antibodies against MK-1406 after repeated doses, which might affect how the drug works or how safe it is, and to better understand the safety and tolerability of repeated doses. Participants will receive two doses of MK-1406 over two years and be monitored for 18 months. Researchers will check for immune responses against the drug, watch for any side effects, and measure how the drug behaves in the body over time. This study is based on the idea that people who tolerated MK-1406 well before will likely continue to tolerate it safely with repeated annual dosing, and that the risk of immune reactions will remain low.
Gender: All
Ages: 18 Years - 66 Years
Updated: 2026-08-20
4 states
NCT07723833
A Study to Investigate the Relative Bioavailability and Safety of Different Oral Formulations of Elecoglipron in Healthy Participants
The purpose of this study is to measure the pharmacokinetics (PK-how the body processes the study drug) of elecoglipron in healthy participants when taken by mouth as different formulations.
Gender: All
Ages: 18 Years - 55 Years
Updated: 2026-08-20
2 states
NCT07300085
A Trial to Evaluate the Effect of CD388/MK1406 on the Immunogenicity of Fluzone® HD Vaccine (CD388.SQ.1.08/MK-1406-007)
Approximately one billion cases of seasonal influenza occur annually. Of these, 3 to 5 million illnesses are severe and responsible for up to 650,000 deaths per year (WHO 2025). Yearly administration of an influenza vaccine for the prevention of influenza is currently recommended. However, the real-world vaccine effectiveness varied from 10% to 60% in the general population across the years of 2004 to 2024, with effectiveness in most years below 50% (CDC 2025) and decreasing to as low as 5% in immunocompromised individuals (Hughes 2021). Researchers are looking for other ways to prevent severe illness from the influenza virus. The goals of this study are to learn if: * MK-1406 (formerly CD388) is safe to take with Fluzone® * MK-1406 affects the immune response to Fluzone®
Gender: All
Ages: 18 Years - 49 Years
Updated: 2026-08-19
2 states
NCT07515417
Effect of Magnesium Supplementation on Sleep Quality and Cognitive Function in Saudi Adults
The goal of this clinical trial was to evaluate whether magnesium citrate supplementation improved sleep quality and cognitive function in healthy Saudi adults. It also assessed the effects of magnesium on selected blood markers. The main questions it aimed to answer were: Did magnesium supplementation improve sleep quality? Did magnesium supplementation improve cognitive function? Researchers compared participants who received magnesium citrate to a control group that did not receive any intervention to evaluate its effects. Participants: Took magnesium citrate (400 mg daily) for 90 days (two capsules: one in the afternoon and one 1-2 hours before bedtime) Visited Umm Al-Qura University twice (before and after the intervention) for: Sleep quality assessment Cognitive function assessment Blood sample collection to measure serum magnesium and HbA1c The control group did not receive any supplementation during the study period.
Gender: All
Ages: 18 Years - 50 Years
Updated: 2026-08-18
NCT07013643
A Study to Investigate the Effect of AZD6234, AZD9550, and a Combination of AZD9550 and AZD6234 on Pharmacokinetics of Combined Oral Contraceptive Ethinyl Estradiol/Levonorgestrel in Healthy Female Participants Living With Overweight or Obesity
This study will measure the effects of multiple doses of AZD6234, AZD9550 and a combination of AZD9550 and AZD6234 given as injection(s) on pharmacokinetics (PK) of combined oral contraceptive (CoC) ethinyl estradiol (EE)/levonorgestrel (LEVO) in healthy female participants with obesity.
Gender: FEMALE
Ages: 35 Years - 75 Years
Updated: 2026-08-18
2 states
NCT07769489
Study to Assess Tolerability of Injecting Larger Volumes (2-5 mL) Subcutaneously at Different Rates: Participant Experience and Acceptance
The purpose of the study is to investigate the tolerability of different injection/infusion volumes and speed compared to standard practise. The order in which the different volumes and injection speeds will be given to participants will be allocated by chance. Participants will be in this clinical study for about 1 week.
Gender: All
Ages: 18 Years - 64 Years
Updated: 2026-08-18