Clinical trials
Supplementation clinical trials
Below are recruiting supplementation clinical trials, each written for real people, not researchers. We’re tracking 694 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT07497347Recruiting
Amino acids and lifestyle for brain aging in older adults
This study tests whether taking a specific amino acid supplement, along with lifestyle changes, can help slow or improve brain aging in older adults who have mild depression. It aims to see if these nutrients can support brain health and mood.
BresciaAges 65–85 - NCT07263789Recruiting
Food supplement for better blood sugar
This study tests a food supplement to see if it helps keep blood sugar levels healthier in people with slightly high blood sugar (pre-diabetes). If you qualify, you would take the supplement and have your blood sugar checked over time.
Pavia, LombardyAges 18 years+ - NCT07177183Recruiting
Low creatinine as a sign of longer breathing tube use
This study looks at whether low blood creatinine levels can help predict which patients will need a breathing machine for a long time or have trouble coming off it. If you are under 18 and in a post-ICU care unit, you may be able to join.
BrnoAges 18 years+ - NCT07151105Recruiting
Vitamin C for gut health in adults with obesity
This trial tests whether taking vitamin C supplements helps improve gut barrier function in adults with obesity. You'll follow a low-fruit-and-vegetable diet for two, two-week periods.
Columbus, OhioAges 18–50 - NCT07743073Recruiting
Ceylon cinnamon for diabetic nerve pain
This study tests whether taking Ceylon cinnamon daily can help lower blood sugar, improve cholesterol, and reduce nerve pain in adults with type 2 diabetes and painful diabetic peripheral neuropathy. If you qualify, you might get a natural supplement that could ease your symptoms.
AmmanAges 18 years+ - NCT07730606RecruitingPhase 3
Sodium bicarbonate supplement study for female basketball players
This study tests if taking sodium bicarbonate (a common kitchen ingredient) can improve performance in female basketball players. It's designed for healthy athletes who train regularly.
PoznanAges 16–35 - NCT07622628Recruiting
AI-Guided Microbiome Nutrition for Better Blood Sugar Control
This trial tests whether a personalized nutrition plan based on your gut bacteria (microbiome) can help improve blood sugar control in type 2 diabetes. Researchers will use artificial intelligence to match you with a diet tailored to your unique gut bacteria.
IzmirAges 18–65 - NCT07716904Recruiting
Whey Protein and Adaptogen Supplement for Active Men
This study tests whether a whey protein drink with an adaptogen (ashwagandha) can help physically active men perform better and recover faster. You would keep your usual diet and exercise routine while taking the supplement.
Brighton, East SussexAges 18–45 - 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+ - 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+ - 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 - NCT05008705Recruiting
Protein and muscle stimulation for hospitalized seniors
This trial tests whether increasing protein intake plus using a gentle electrical muscle stimulation device can help maintain or build muscle mass in older adults while they are hospitalized. It may help prevent muscle loss that can happen after short hospital stays.
São PauloAges 65 years+ - 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+ - 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 - NCT05480696RecruitingPhase 2
Soluble fiber supplement for fatty liver in kids
This Phase 2 study tests whether a soluble fiber supplement can improve fatty liver disease in children who have obesity and confirmed NAFLD. It may help reduce liver fat and related liver enzyme elevations measured during clinic visits and MRI.
Hamilton, OntarioAges 8–17 - NCT05524649Recruiting
Probiotics for healthy newborns’ poop bacteria balance
This study looks at whether giving probiotics to healthy newborns changes the bacteria in their stool. It may help researchers understand early gut health, but it is only for babies who meet specific health and timing requirements.
Alcaldía Coyoacán, PueblaAges 1 day–3 months - 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+ - 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 - NCT05723913Recruiting
Test functional foods on blood sugar and gut bacteria
This study looks at how eating specific functional foods affects blood sugar after meals and changes in gut bacteria. It may help people understand ways to support healthy blood sugar and digestion, but it’s not for people with diabetes.
Mexico City, Mexico CityAges 18–60 - 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 - 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 - 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 - NCT06050668RecruitingPhase 2
Amino acid supplement study for broken hip in older adults
This study tests whether giving extra essential amino acids (building blocks of protein) to older adults hospitalized with a broken femur (thigh bone) can improve their recovery. If you are 65 or older, broke your femur from a simple fall, and are having surgery to fix it, you may be able to join.
Iowa City, IowaAges 65 years+ - NCT06072066Recruiting
Can a supplement help with rosacea and inflammation?
This study tests whether an oral supplement containing L-histidine and antioxidants can improve skin barrier function and reduce inflammation in people with mild to moderate rosacea. It may help if you have rosacea and signs of inflammation in your blood.
Sacramento, CaliforniaAges 30–70
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Common questions
- Are there clinical trials for supplementation?
- Yes. Clin2 currently lists 694 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.