Clinical trials
Supplementation clinical trials
Below are recruiting supplementation clinical trials, each written for real people, not researchers. We’re tracking 675 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT07050173RecruitingPhase 1
Supplement study for retired athletes and veterans with head impacts
This study tests whether a supplement called gamma-glutamylcysteine can help people who have had repeated head impacts from football or military combat. You will take the supplement and have brain scans and memory tests to see if it makes a difference.
Pittsburgh, PennsylvaniaAges 30–70 - NCT07050693Recruiting
Can a breast-milk sugar supplement prevent colds and stomach bugs?
This study tests a chewable supplement made from a natural sugar found in breast milk (2'-fucosyllactose) to see if it helps prevent colds and stomach bugs in young children who attend daycare or school. It is for healthy children between 1 and 4 years old.
Bari, BariAges 1–4 - NCT07050888Recruiting
Inulin supplement study for type 1 diabetes
This study tests if taking inulin, a type of fiber, can help improve blood sugar control and immune health in people with type 1 diabetes. Participants will take a daily supplement for a period of time to see if it makes a difference.
AmsterdamAges 18–70 - NCT07062198RecruitingPhase 3
Metabolic supplement for Alzheimer's disease
This trial tests a special supplement combination designed to support brain energy use in people with Alzheimer's. It aims to see if the supplement can help slow cognitive decline.
AlanyaAges 50 years+ - NCT07064005RecruitingPhase 1
Boosting glutathione with a supplement in Parkinson's
This study tests whether a supplement called gamma-glutamylcysteine can increase levels of a natural antioxidant called glutathione in the brain of people with Parkinson's. If you are between 50 and 80 and have mild cognitive symptoms, this trial may help researchers understand a new way to support brain health.
Pittsburgh, PennsylvaniaAges 50–80 - NCT07066267Recruiting
Mitochondria from fat cells to boost IVF eggs
This study tests if giving your eggs a boost from your own fat-cell mitochondria can improve chances of a healthy pregnancy for people who have had multiple failed IVF cycles. You'll donate a small amount of fat through liposuction, and the mitochondria from those cells will be added to your eggs before fertilization.
ColomboAges 29–39 - NCT07068191Recruiting
Gepaktiv vs other drugs for fatty liver with enlarged liver
This study tests a new drug, Gepaktiv, compared to two other treatments (UDCA and ademetionine) for people with metabolic fatty liver disease who also have an enlarged liver. You may be able to join if you meet specific test results showing moderate liver fat and scarring.
Tyumen, Tyumen OblastAges 18–65 - NCT07076849RecruitingPhase 2
Probiotics for Iron in Pregnancy
This trial tests if taking a probiotic can help improve iron levels and overall blood health in pregnant women who are at risk for iron deficiency. If you are between 10 and 16 weeks pregnant with a single baby and have slightly low iron, this study may help you.
Chicago, IllinoisAges 18–45 - NCT07081373Recruiting
Repeat dose of liposomal bupivacaine for pain after anal fistula surgery
This trial tests if a repeat dose of liposomal bupivacaine (a long-acting numbing medicine) helps reduce pain after surgery for anal fistula. It may be a good option if you are having this surgery and want better pain control.
Guangzhou, GuangdongAges 18–60 - NCT07084597Recruiting
Vitamin D3 for Heart Health in Parkinson's Men
This study tests whether taking vitamin D3 supplements can improve the nerve function that controls your heartbeat in men with Parkinson's disease who have low vitamin D levels. If you have mild to moderate Parkinson's and are on levodopa, this trial may help understand if vitamin D can support your heart health.
Dhaka, ShahbagAges 51–70 - NCT07085598Recruiting
Vitamin D3 for heart nerve health in men with epilepsy
This study tests whether taking vitamin D3 supplements can improve how well the nerves controlling your heart work in men with epilepsy who have low vitamin D levels. If you have low vitamin D from taking certain epilepsy medicines, this trial may help understand if vitamin D can support your heart health.
Dhaka, ShahbagAges 20–40 - NCT07088302Recruiting
Lactase enzyme for feeding intolerance in preterm babies
This trial tests if giving lactase enzyme supplements helps preterm babies (born at or before 32 weeks) tolerate their feedings better. If your baby was born early and started feeding within the first few days of life, this study may be a good fit.
AlexandriaAges 3 days–1 month - NCT07091084Recruiting
Herbal supplements for constipation in cancer survivors
This study tests whether herbal supplements can help cancer survivors who have ongoing constipation. If you finished cancer treatment at least a month ago and have had constipation symptoms for at least 6 months, this trial may be a good fit.
Basking Ridge, New JerseyAges 18 years+ - NCT07093346Recruiting
Pectin supplement for fatty liver disease
This study tests whether a pectin supplement (a fiber found in fruits) can reduce inflammation and improve liver and metabolic health in people with fatty liver disease (MASLD). You might be eligible if you have MASLD, a healthy weight range, and can avoid certain medications and foods.
NottinghamAges 18 years+ - NCT07095426Recruiting
Fiber supplement study for gut and blood vessel health
This study tests whether taking a fiber supplement can improve gut health and blood vessel health in people with obesity. It may help you understand how your body responds to extra fiber.
Muncie, IndianaAges 18–55 - NCT07096414Recruiting
Vitamin D3 and brain waves in men with epilepsy and low vitamin D
This trial tests whether taking vitamin D3 supplements changes brain wave activity in men with epilepsy who also have low vitamin D levels. It aims to see if vitamin D could help improve brain function.
Dhaka, Shahbag, DhakaAges 20–40 - NCT07105163Recruiting
Bisphosphonate and supplement adherence in postmenopausal osteoporosis
This trial looks at how well women with postmenopausal osteoporosis follow their treatment plan, which includes a bisphosphonate taken once a week or once a month along with daily calcium and vitamin D supplements. The goal is to understand patterns that may help improve care.
Santiago de Compostela, A coruñaAges Any age - NCT07111598Recruiting
Iron supplements and the immune system in HHT
This study looks at how iron supplements affect the immune system in people with HHT (a genetic condition that causes bleeding from abnormal blood vessels). You may be placed in one of three groups depending on your iron and ferritin levels.
Bron, RhoneAges 18–99 - NCT07115342Recruiting
Probiotics and vitamin D for hay fever relief
This study tests whether taking a combination of probiotics (good bacteria) and vitamin D can help reduce hay fever symptoms. It may be a good option if your vitamin D is low and you haven't used probiotics recently.
Tanta, Gharbia GovernorateAges 18–65 - NCT07117110Recruiting
Tomato nutrient as a diet check marker
This trial tests whether lycopene, a nutrient found in tomatoes, can be used as a reliable marker to see if people are following a specific diet. It is looking for healthy men who do not have any tomato allergies or recent health changes.
RotterdamAges 18–75 - NCT07123857Recruiting
Quick lactate test for triage in emergency department
This trial tests if a quick lactate test (a blood test that measures a chemical linked to serious illness) can help doctors sort patients more accurately in the emergency department. It is for adults who are triaged as 'yellow' (urgent) and can give consent.
MariborAges 18 years+ - NCT07135934Recruiting
Can sodium bicarbonate boost finswimming performance?
This trial tests whether taking a single dose of sodium bicarbonate (a common food ingredient) before swimming can help national-level finswimmers perform better. It's for athletes ages 15–30 who train at least four times a week.
Olomouc, Olomouc RegionAges 15–30 - NCT07144527Recruiting
NMN supplement for exercise in healthy older adults
This trial tests whether a supplement called nicotinamide mononucleotide (NMN) can help healthy adults aged 60 to 80 improve their exercise tolerance. You'll take the supplement and do supervised cycling sessions to see if it boosts your stamina.
Beverly Hills, CaliforniaAges 60–80 - NCT07157462Recruiting
Testing a multi-strain probiotic for year-round allergies
This trial tests if a special probiotic blend can help people with year-round allergic rhinitis (nasal allergies) caused by common indoor allergens like dust mites, cat, or dog dander. Volunteers will take the probiotic daily and track their symptoms.
Strasbourg, AlyatecAges 18 years+
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Common questions
- Are there clinical trials for supplementation?
- Yes. Clin2 currently lists 675 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.