Clinical trials
Dietary Supplement clinical trials
Below are recruiting dietary supplement clinical trials, each written for real people, not researchers. We’re tracking 97 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- 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 - 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 - 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+ - 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 - 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 - 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 - 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 - NCT06379997Recruiting
Oral supplement vs. shoulder injection for rotator cuff pain
This trial compares taking an oral supplement versus getting hyaluronic acid injections for ongoing shoulder pain due to a partial rotator cuff tear. It aims to see which treatment works better for improving movement and reducing pain without surgery.
Roma, RMAges 30–80 - NCT07585994Recruiting
Probiotic supplement for long-standing type 1 diabetes
This study tests whether taking a specific probiotic (a beneficial bacteria) for 4 weeks can improve immune function and metabolism in people who have had type 1 diabetes for at least 5 years. Researchers believe this probiotic may help the body's remaining insulin-producing cells work better.
AmsterdamAges 18 years+ - 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 - NCT07651514Recruiting
Magnesium and Melatonin for Better Sleep and Leg Cramps
This study tests whether taking daily magnesium and melatonin supplements can help improve sleep quality and reduce nighttime leg cramps in adults. You'll wear a special ring to track your sleep and use a smartphone app to log your experiences.
Palm Beach Gardens, FloridaAges 40–75 - NCT06748989Recruiting
Dietary supplement for memory and focus in postmenopausal women
This study tests whether a dietary supplement containing PQQ, GABA, caffeine, and B vitamins can improve thinking and memory in healthy women after menopause. Participation involves taking the supplement for a period and completing simple cognitive tests.
Debrecen, HBAges 18 years+ - NCT07672938Recruiting
Olive supplement and Mediterranean diet for mild memory loss
This trial tests whether a dietary supplement made from olive polyphenols, combined with following a Mediterranean diet, can help protect thinking and memory in people with mild cognitive impairment (MCI). It may be a good fit if you have early memory changes and want to try a nutrition-based approach.
Thessaloniki, Central MacedoniaAges 50–85 - NCT06993103RecruitingPhase 4
Pasteurized donor milk for newborns of mothers with diabetes
This trial tests if giving pasteurized donor human milk to newborns of mothers with diabetes can help their health. It compares donor milk to regular baby formula as a supplement when extra feeding is needed soon after birth.
Brisbane, QueenslandAges birth–2 days - NCT07764328Recruiting
Supplement for hormone balance in women with PCOS
This trial tests a dietary supplement designed to improve hormone balance in women with PCOS or PCOS-like symptoms. It may help regulate menstrual cycles and reduce signs like acne or excess hair growth.
Los Angeles, CaliforniaAges 18–40 - NCT06776016RecruitingPhase 2
Dietary supplement for radiation-related rectal injury
This trial tests a dietary supplement to help heal damage inside the rectum caused by pelvic radiation therapy. If you have mild to moderate rectal bleeding but no signs of cancer recurrence, you may be able to join.
Guangzhou, GuangdongAges 18–75 - NCT07752628Enrolling by invitation
F-60 safety trial for children with severe acute malnutrition
This trial tests a new food supplement (F-60) for children hospitalized with severe acute malnutrition. It aims to see if F-60 is safe and can help children recover.
DhakaAges 6 months–4.9 years - NCT07421596Recruiting
Dietary supplement study for gut and digestive health
This trial tests whether a dietary supplement system can improve gut and digestive health over 8 weeks. You may be eligible if you have digestive symptoms like bloating, stomach pain, or diarrhea.
San Francisco, CaliforniaAges 18–80 - NCT07529249Recruiting
Oral Collagen Peptides for Skin Barrier Function in Women
This study tests whether taking collagen peptides by mouth can improve dry skin and strengthen the skin barrier in women ages 45–70. Researchers will measure changes in skin moisture and texture over time.
NiceAges 45–70 - NCT07511088Recruiting
Study of a supplement for mild stress in healthy adults
This study tests a dietary supplement for people who experience mild stress or anxiety at least once a week. You will fill out surveys on your phone or computer to see if the supplement helps you feel calmer.
San Francisco, CaliforniaAges 18–60 - NCT07433686Recruiting
Saskatoon Berry Juice for Muscle Recovery
This trial tests whether Saskatoon berry juice helps muscles recover after exercise. It involves healthy adults aged 18–35 who can exercise safely.
Saskatoon, SaskatchewanAges 18–35 - NCT07442864Recruiting
Study of a supplement for hunger and weight
This trial tests a dietary supplement designed to support leptin, a hormone that helps control appetite. If you're an adult curious about how it affects your hunger and weight, you may be able to join.
New York, New YorkAges 18 years+ - NCT07383974Recruiting
12-week study: how diet affects skin and health
This trial tests whether eating more fruits and vegetables for 12 weeks can improve your skin and how you feel physically. It uses a special light scanner to measure skin health.
Shanghai, Shanghai MunicipalityAges 18 years+ - NCT07355634Recruiting
Terraflora daily care for gut health
This trial tests if a daily probiotic supplement, Terraflora, can improve gut health in people with an imbalance of gut bacteria (dysbiosis). You may join if you're an adult with a stool test showing dysbiosis and are not taking certain other medications or supplements.
Richmond, VirginiaAges 25 years+
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Common questions
- Are there clinical trials for dietary supplement?
- Yes. Clin2 currently lists 97 recruiting dietary supplement 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 dietary supplement 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 dietary supplement 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.