Clinical trials
Supplementation clinical trials
Below are recruiting supplementation clinical trials, each written for real people, not researchers. We’re tracking 671 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT06044168Recruiting
Nutritional supplement for muscle growth in cerebral palsy
This study tests whether a nutritional supplement can help build muscle in children with spastic cerebral palsy. It may be a good fit if you have trouble with walking and have not had certain treatments recently.
Leuven, Vlaams-BrabantAges 4–10 - NCT06022822RecruitingPhase 2
Urolithin A supplement before prostate cancer surgery
This trial tests whether taking a supplement called urolithin A for a few weeks before prostate removal surgery can help. The supplement comes from pomegranates and may slow cancer growth. You may qualify if you have prostate cancer, are planning surgery within 3-6 weeks, and have not had prior treatment like hormone therapy.
Los Angeles, CaliforniaAges 18 years+ - NCT05911893Recruiting
High-calorie supplement for malnourished toddlers’ growth
This study looks at whether giving a high-calorie oral nutrition supplement helps children aged 1 to 3 years who are undernourished gain weight and grow. You may be eligible if your child has low growth measurements and takes in too few calories for their needs.
Hefei, AnhuiAges 1–3 - NCT05869812RecruitingPhase 2
HMB supplement study to help recovery after surgery
This trial tests whether taking an HMB supplement after surgery can help improve muscle size and function during recovery. It may be helpful if you are a female athlete planning rehab at a specific physical therapy clinic.
Overland Park, KansasAges 18–45 - NCT05864521Recruiting
Beetroot juice to improve sleep
This trial studies whether drinking beetroot juice can help improve sleep. It may be most helpful if you are generally healthy and have trouble sleeping under the study’s conditions.
Rochester, MinnesotaAges 18–80 - NCT03991897Recruiting
Keto diet to treat early arm swelling after lymph node removal
This study tests whether a ketogenic (keto) diet can reduce arm lymphedema (swelling) that started within the last year after lymph node removal. It aims to improve swelling by changing the body’s metabolism.
LeuvenAges 18 years+ - NCT05681624Recruiting
Extra oxygen during labor to support the baby
This trial studies whether giving extra oxygen to the pregnant person during labor helps the baby during “intrauterine resuscitation,” when monitoring suggests the baby needs support. It may help babies recover better while still in the womb, especially during continuous fetal monitoring.
St Louis, MissouriAges Any age - NCT05640843Recruiting
Plant-based diet study for MGUS or smoldering myeloma
This trial tests whether a whole-food, plant-based eating pattern—plus supplements or placebo—can improve health outcomes in people with MGUS or smoldering multiple myeloma. You may be asked to follow specific recipes and stop certain supplements, so it helps to confirm you can stick with the plan.
Atlanta, GeorgiaAges 18 years+ - NCT05380401Recruiting
DHA and ARA milk fats for very early preterm babies
This study looks at how adding two specific milk fats (DHA and ARA) through enteral feeding affects metabolism in very early preterm infants. It may help researchers understand what these nutrients do in babies born around 25–30 weeks gestation.
Los Angeles, CaliforniaAges Up to 8 months - NCT05356117Recruiting
Exercise plus protein shakes for people with pancreatic cancer
This trial studies whether a supervised resistance exercise program combined with protein supplementation can help people with non-metastatic pancreatic cancer during chemotherapy. It may improve strength and how well you tolerate treatment, with safety monitoring throughout.
Boston, MassachusettsAges 18 years+ - NCT05067595RecruitingPhase 1
Fecal transplant and fiber for gut graft-versus-host disease
This study tests whether a fecal microbiota transplant (a procedure that puts healthy donor bacteria into your gut) combined with a dietary fiber supplement can help treat gut graft-versus-host disease, a common complication after a stem cell transplant. It may help reduce diarrhea and other gut symptoms.
Seattle, WashingtonAges 18 years+ - NCT04573439Recruiting
Protein needs study for healthy active children
This study looks at how much protein children who are already in the “normal weight” range need to support an active lifestyle. It may help researchers fine-tune nutrition guidance for kids who are active and healthy.
Little Rock, ArkansasAges 8–10 - NCT04829136Recruiting
Fiber supplement for blood cancer treatment
This trial tests whether taking a daily fiber supplement can help people undergoing treatment for blood cancers. It aims to improve gut health and possibly reduce treatment side effects.
Seattle, WashingtonAges 18 years+ - NCT04401605Recruiting
Fermented foods diet for ulcerative colitis symptoms
This study tests whether adding fermented foods to your diet can improve symptoms of ulcerative colitis. It also looks at people with intestinal inflammation markers to see if diet changes may help them feel better.
Palo Alto, CaliforniaAges 18 years+ - NCT07644806Recruiting
Olive oil supplement for heart failure patients
This trial tests whether adding extra virgin olive oil to your diet can improve heart health and exercise ability in people with heart failure. You would receive olive oil supplements and take part in a cardiac rehab program.
Norfolk, VirginiaAges 18–85 - NCT04041583Recruiting
Cervical spine fusion using spacers to support healing and function
This study looks at how well a specific neck surgery (posterior cervical fusion using added spacers) works for people with long-standing, non-traumatic neck wear-and-tear problems. It will track outcomes using symptoms and imaging to see if the surgery improves function and healing.
Columbus, OhioAges 18 years+ - NCT06274749Recruiting
Urolithin A for blood sugar in adults 55+ with extra weight
This study tests if a natural supplement called Urolithin A can help improve how your body handles sugar (glucose) in healthy adults aged 55 and older who have a higher body weight. You would take a daily capsule and come in for tests including blood work, treadmill walks, and an MRI.
Baltimore, MarylandAges 55–100 - NCT07111065RecruitingPhase 2
Fatty Acid Supplement for Dermatomyositis
This study tests whether taking a fatty acid supplement (omega-3) for 6 months can help reduce disease activity in people with dermatomyositis. Participants will also receive dietary coaching and have regular check-ups at the NIH to monitor their progress.
Bethesda, MarylandAges 18–60 - NCT04275453RecruitingPhase 1/Phase 2
Test diet vs ketone drinks to reach ketosis safely
This early-stage study compares how quickly and effectively a low-carbohydrate diet versus taking ketone supplements helps the heart use less sugar (measured with PET/CT scans). It also looks at how long it takes to reach a “ketosis” state, which may be helpful for metabolic health.
Philadelphia, PennsylvaniaAges 18 years+ - NCT04442412RecruitingPhase 3
Prednisone and vitamin D before chemo for certain lymphomas
This Phase 3 study tests whether a short “pre-treatment” with prednisone, with or without vitamin D, can improve outcomes when followed by standard lymphoma chemo. It aims to see if adding vitamin D early can help older adults tolerate or benefit from treatment for specific lymphoma types.
Brescia, BSAges 65 years+ - NCT05357157Recruiting
Electroacupuncture for fibromyalgia pain and quality of life
This trial studies whether electroacupuncture can reduce fibromyalgia pain and improve quality of life. It also looks at changes in certain immune cells, which may help explain how treatments work.
HeraklionAges 18–80 - NCT05675397Recruiting
Donor milk supplement for very small preterm babies
This study looks at giving donor human milk to very low-birth-weight preterm babies when a mother’s own milk is not enough during the first three weeks. It may help babies get human milk instead of formula during that early period.
AthensAges 1 day–3 weeks - NCT05667090Recruiting
High-dose vitamin D3 to ease chronic pain in dialysis patients
This study tests whether taking a very high dose of vitamin D3 can reduce moderate to severe chronic pain in people on hemodialysis. It may help by improving vitamin D-related pathways that could affect pain, but you must also meet specific health and testing requirements.
TaipeiAges 20 years+ - NCT05259904RecruitingPhase 2
L-citrulline supplement for deployment-related asthma symptoms
This trial studies whether an L-citrulline supplement can improve asthma control in people who developed persistent asthma symptoms after military deployment. If you qualify, you may be asked to track symptoms and breathing test results to see if the supplement helps.
Denver, ColoradoAges 18–70
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Common questions
- Are there clinical trials for supplementation?
- Yes. Clin2 currently lists 671 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.