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
- NCT07534852Recruiting
Nutrition and exercise support for colon cancer surgery patients
This study tests whether nutrition support and exercise help patients with early-stage colon cancer recover better after surgery. Researchers will provide dietary guidance and a supervised exercise program tailored to your needs.
Málaga, MalagaAges 18–75 - NCT07502924Recruiting
Testing Geranylgeraniol supplements for muscle health
This study tests whether taking a supplement called geranylgeraniol (GG) can improve muscle health. It is looking for physically active adults who are willing to follow specific dietary rules and avoid certain foods and supplements during the study.
Saint Charles, MissouriAges 30–60 - NCT07497698Recruiting
Saffron supplement for better sleep in adults
This study tests whether taking a saffron extract supplement can help improve sleep in middle-aged adults with mild to moderate sleep troubles. You would take a daily supplement for a few weeks and report how well you sleep.
Granada, GranadaAges 18–65 - NCT07497932Recruiting
Nutritional effects in heart surgery
This trial looks at whether adding a probiotic supplement before cardiovascular surgery can improve recovery. It studies the link between nutrition, gut health, and surgical outcomes.
New Taipei CityAges 50–80 - NCT07497555Recruiting
Pecan nut oil for inflammation in overweight adults
This study tests if taking pecan nut oil every day can reduce inflammation in adults who are overweight. It may help improve health and lower the risk of future disease.
Monterrey, Nuevo LeónAges 18–55 - 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 - NCT07471048Recruiting
Magnolia supplement for psoriasis immune health
This trial tests whether a magnolia dietary supplement can improve immune markers in people with psoriasis. If you have stable psoriasis (for at least 6 months) and are not using certain strong medications, you may be able to participate from home by using a smartphone app and mailing blood samples.
Englewood, New JerseyAges 18 years+ - NCT07461233Recruiting
Gut Health and Synbiotics in Hemodialysis
This study tests whether taking a special mix of friendly bacteria and prebiotics (called synbiotics) can help improve gut health in people on hemodialysis. It may reduce inflammation and other complications related to kidney disease.
Taichung, Wuqi DistrictAges 18 years+ - NCT07451977Recruiting
Oxygen during a 6-minute walk test for lung disease
This trial tests whether adding extra oxygen during a 6-minute walk test helps people with chronic lung disease breathe better. It is for people with COPD or interstitial lung disease who have low oxygen levels, either during exercise or all the time.
Lumezzane, BresciaAges 18 years+ - NCT07437911Recruiting
Can a Supplement Help with Nutrient Gaps for GLP-1 Users?
This study tests whether a daily supplement can help fill nutrient gaps and improve gut health for people who are already taking GLP-1 weight-loss medications (like Ozempic or Wegovy). Participants must be on a stable dose for at least 8 weeks and be generally healthy without other chronic conditions.
Santa Monica, CaliforniaAges 18–59 - NCT06810466Recruiting
Dietary supplements for mild high cholesterol
This study tests two dietary supplements to see if they can improve cholesterol levels in people with mildly high cholesterol who are otherwise healthy and at low risk for heart disease.
Bologna, ItalyAges 18–69 - NCT07427017RecruitingPhase 2
Selenium for Ulcerative Colitis Patients on Biologics
This trial tests whether taking selenium supplements can help people with moderate to severe ulcerative colitis that is being treated with advanced therapies (biologics). The goal is to see if selenium can improve symptoms and reduce inflammation.
Chicago, IllinoisAges 18–85 - NCT07417514Recruiting
Tolerance test of an oral nutrition supplement for kidney patients
This study tests how well kidney patients tolerate a new oral nutrition supplement taken by mouth or through a feeding tube. It aims to see if it is acceptable for daily use over 28 days.
LondonAges 18 years+ - 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 - NCT07400796Recruiting
Prenatal vitamin study for pregnant women in Cambodia
This study looks at giving multiple micronutrient supplements (MMS) to pregnant women in Takeo, Cambodia. It aims to understand how well the health system can provide these vitamins instead of the usual iron and folic acid.
Phnom PenhAges 18 years+ - NCT07393958Recruiting
Can food supplements improve quality of life with endometriosis pain?
This study tests if a food supplement (Doliral®) can help reduce pelvic pain and improve daily life in women with endometriosis. It is for those with mild to moderate endometriosis (stages I–III) who have had pain for at least three months but do not need surgery right now.
BarcelonaAges 18 years+ - NCT07395973Recruiting
Ketogenic drink and muscle health in older adults
This study tests whether a special ketogenic drink taken for 4 weeks can improve how your body uses energy and help maintain muscle health. It may be a good option if you are between 60 and 80, overweight but not diabetic, and not very active.
MaastrichtAges 60–80 - NCT07385144Recruiting
Dietary supplement study in healthy children
This study tests whether a dietary supplement can affect certain blood markers in healthy children. It will help researchers see if the supplement has any effects on the body.
San Francisco, CaliforniaAges 4–15 - NCT06835816Recruiting
Amino acid supplements during dialysis
This trial tests whether adding amino acid supplements during dialysis helps people with kidney failure. It may be an option if your doctor decides you need these supplements.
StockholmAges 18 years+ - NCT07388121Recruiting
Vitamin C and gut health in healthy adults
This trial tests whether taking vitamin C supplements changes the bacteria in your gut and how well your gut works. If you are a healthy adult, you may be able to join.
GlasgowAges 18–65 - NCT07345260Recruiting
Can a nutritional supplement improve your sleep?
This trial tests a nutritional supplement to see if it can improve your sleep quality. You'll need to wear a smart ring and stop using other sleep aids for about 7 weeks.
Santa Monica, CaliforniaAges 35–65 - NCT07346703Enrolling by invitation
DHA supplement study for multiple sclerosis patients
This trial tests whether taking a DHA supplement (a type of omega-3 fat) can help people with multiple sclerosis. It aims to see if it may improve muscle function or overall well-being.
La Ñora, MurciaAges 18–65 - NCT07341399Enrolling by invitation
Amino acid supplement study for spinal deformity surgery
This trial tests whether taking essential amino acid supplements before and after surgery can help adults recovering from spinal deformity correction. It is for patients who are scheduled for surgery at UAMS and will attend physical therapy in Little Rock.
Little Rock, ArkansasAges 40–65 - NCT07317830Recruiting
Comparing vitamin D3 forms for low vitamin D
This study compares different forms of vitamin D3 to find which works best for adults with low vitamin D levels. If you have a vitamin D deficiency and are generally healthy, this trial may help determine the most effective supplement for you.
BelgradeAges 18–80
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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.