Clinical trials
Supplementation clinical trials
Below are recruiting supplementation clinical trials, each written for real people, not researchers. We’re tracking 700 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT06555575RecruitingPhase 2
CoQ10 supplement for women starting IVF
This trial tests two forms of coenzyme Q10 (ubiquinone vs. ubiquinol) to see if either improves egg quality or IVF success. It may be a good fit if you are between 37 and 43, doing your first IVF cycle, and have certain hormone levels within a normal range.
Toronto, OntarioAges 37–43 - NCT07142759Enrolling by invitation
Vitamin D tomato soup trial for low vitamin D levels
This study tests whether a specially grown tomato soup (with extra vitamin D) can raise your vitamin D levels over 3 weeks. You'll eat one soup packet each day. It's for people who have low but not severely low vitamin D.
NorwichAges 18 years+ - NCT06776640Recruiting
Vitamin D3 before dental implant surgery for better bone bonding
This trial tests whether taking vitamin D3 pills before and after dental implant surgery helps the implant bond better with the bone. It is for people who have low vitamin D levels and are already scheduled for an implant.
Nantes, NantesAges 18 years+ - NCT07432490RecruitingPhase 2
Fucose supplement trial for GLUT1 deficiency
This trial tests whether taking fucose (a type of sugar) can help people with GLUT1 deficiency syndrome, a rare genetic condition that affects how the brain gets energy. If you have ataxia (trouble with balance or coordination) and meet other criteria, this study may be an option for you.
Portland, OregonAges 18 years+ - NCT06695429Recruiting
Beetroot juice to prevent kidney damage from contrast dye
This trial tests if drinking beetroot juice can help protect your kidneys from damage caused by the dye used during heart procedures. It is for people hospitalized with a certain type of heart attack who are at moderate to high risk of kidney problems.
CartagenaAges 18 years+ - NCT06689761Enrolling by invitation
Collagen peptides and exercise: muscle strength study
This trial tests whether taking collagen peptides before exercise can improve how your muscles adapt to strength training. It could help you build muscle more effectively.
Vienna, State of ViennaAges 18–40 - NCT07437222Recruiting
Ginger capsules for inflammation in overweight adults
This study tests whether taking ginger capsules can help reduce inflammation, oxidative stress, and improve blood vessel function in people who are overweight or obese but otherwise healthy. You would take ginger capsules daily for several weeks and have your blood and blood vessel health checked.
Murcia, MurciaAges 23–65 - NCT07310485Enrolling by invitation
Phytoestrogens for premenstrual syndrome in women nearing menopause
This trial tests whether plant-based compounds (phytoestrogens) can help reduce premenstrual syndrome symptoms in women aged 40–55. It also looks at how these supplements affect gene activity.
Amman, Amman GovernorateAges 40–55 - NCT06590805Recruiting
Electroacupuncture for low milk supply after C-section
This study tests whether using tiny needles at specific points on the skin (electroacupuncture) can help increase milk supply for mothers who had a C-section. It is for healthy women between 25 and 30 years old who are partially bottle-feeding and feel their milk is low.
KafrelsheikhAges 25–30 - NCT06555094Recruiting
Adding a mobile app to brief therapy for suicide risk
This trial studies whether adding a mobile app to brief counseling sessions can help people who are having thoughts of suicide or have recently attempted suicide. It aims to find a more effective way to support your mental health using technology you already have.
Piscataway, New JerseyAges 18 years+ - NCT07314411Recruiting
Carotenoids for Eye Health in Healthy Adults
This study tests if taking a carotenoid supplement (MacuHealth) can improve or protect retinal health in healthy adults. You might join if you have normal vision and no major eye or health problems.
Forest Grove, OregonAges 18–75 - NCT06480695Recruiting
Exercise and Beetroot Supplement in Post-Menopausal Women
This study tests whether different exercise intensities combined with a beetroot-based nitrate supplement can improve blood vessel health in post-menopausal women who do not currently exercise regularly.
Charlottesville, VirginiaAges 45–75 - NCT07459504RecruitingPhase 2
Smart diets for kids with fatty liver disease
This study compares different diet plans to see which works best to reduce fat in the liver of children and teens with MASLD (a type of fatty liver disease). If your child drinks sugary beverages often and has certain health risks like being overweight or having high cholesterol, this trial may help find a healthy eating plan that works.
Grand Rapids, MichiganAges 11–17 - NCT06567665Recruiting
Leucine supplement for muscle building in older men
This study tests if taking a leucine supplement (an amino acid found in protein) can help older men build muscle more effectively. You may be eligible if you are a healthy, non-smoking man between 65 and 75 who does not currently do weight training.
Nottingham, NottinghamshireAges 65–75 - NCT06370611Enrolling by invitation
Home rehab after heart surgery for older adults
This study tests whether early, home-based rehabilitation (using video calls and remote monitoring) can help older adults recover better after heart surgery. If you join, you'll get rehab sessions starting soon after you go home.
AalborgAges 65 years+ - NCT06344442RecruitingPhase 3
Low-dose vasopressin for kidney protection after liver transplant
This trial tests whether giving a low dose of a hormone called vasopressin after a liver transplant can help prevent kidney injury. It's for adults scheduled for a planned liver transplant.
ParisAges 18 years+ - NCT06997471RecruitingPhase 1
Safety of modified stem cell infusion with organ transplant
This early-phase trial tests whether it is safe to give a special type of stem cell transplant (with the naïve T cells removed and only memory T cells left) to people receiving organ transplants. It is for children getting intestine or lung transplants, and for children or adults getting kidney transplants.
Madrid, MadridAges birth+ - NCT07021248RecruitingPhase 4
Bariatric supplements after weight loss surgery
This study tests whether taking special supplements after weight loss surgery can help keep your vitamin levels healthy and avoid too much vitamin B6. If you are having your first weight loss surgery, you can join—as long as you are not pregnant, not allergic to B6, and meet the weight and health requirements.
Alexandria, EgyptAges 18–65 - NCT06896240Recruiting
Fiber smoothie trial for knee replacement patients
This trial tests if drinking a special fiber smoothie for 2 weeks before knee revision surgery can reduce inflammation and improve recovery. It is for people who are scheduled for knee replacement and have certain chronic health conditions.
New York, New YorkAges 40–80 - NCT07590804Recruiting
Plant-Based Diet Study for Blood Cell Cloning
This study tests whether eating more plant-based whole foods can help people with clonal hematopoiesis (a condition where blood cells grow from a single mutated cell). Researchers want to understand if dietary changes affect this condition and collect health information over time.
Basking Ridge, New JerseyAges 18 years+ - NCT07580846Recruiting
Creatine Supplement for Energy and Strength in Menopausal Women
This 12-week study tests whether a creatine-based nutritional supplement helps menopausal women maintain muscle strength and energy. Creatine is a natural compound that helps muscles work better during exercise.
Madrid, MadridAges 40–75 - NCT07481578Recruiting
Exercise and gut health study for active men
This study looks at how your training load affects your gut bacteria and how that relates to exercise performance and muscle health. It may help understand overreaching in healthy men.
Leuven, Vlaams BrabantAges 18–45 - NCT07433049Recruiting
Health supplement study for midlife women
This study tests whether a nutritional supplement can improve metabolic health in women aged 40-60 who are Chinese, Malay, or Indian and have a BMI between 23 and 35. The goal is to see if the supplement helps with weight, blood sugar, and other health markers.
SingaporeAges 40–60 - NCT07219498Recruiting
Probiotics for muscle soreness after exercise
This trial tests whether taking a probiotic supplement for 5 weeks can reduce muscle soreness after exercise. If you exercise regularly and are generally healthy, you may be able to join.
Minneapolis, MinnesotaAges 18–30
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Common questions
- Are there clinical trials for supplementation?
- Yes. Clin2 currently lists 700 recruiting supplementation studies from the U.S. registry, each rewritten for real people, not researchers, so you can see what it’s testing and who it’s for.
- How do I know if I qualify for a supplementation trial?
- Each study lists its eligibility criteria — rules about age, diagnosis, and prior treatments. On every Clin2 trial page we explain these in words written for real people and offer a short, optional pre-screen for a fit read. The study team makes the final decision.
- Does it cost anything to join a supplementation trial?
- Using Clin2 is always free. Many trials cover the cost of the study treatment and related visits; some reimburse travel. The study team explains exactly what’s covered before you decide.
Related conditions
Clin2 helps you find and understand clinical trials and does not provide medical advice. Study data comes from ClinicalTrials.gov. Talk with your doctor about whether a specific trial is right for you.