Clinical trials
Dietary Supplement clinical trials
Below are recruiting dietary supplement clinical trials, each written for real people, not researchers. We’re tracking 98 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT07682532Recruiting
Theanine and Mediterranean diet for Parkinson's symptoms
This trial tests whether a supplement called L-theanine and a Mediterranean diet can improve sleep, digestion, and inflammation in early-stage Parkinson's disease. It may help if you are in stage 1 and live with a healthy partner.
IstanbulAges 50–80 - NCT07643558Recruiting
Fish oil and weight training for cancer patients' muscle health
This study tests whether taking fish oil supplements combined with progressive weight training exercises can help preserve or build muscle strength in cancer patients undergoing treatment. The goal is to help you maintain physical function and quality of life during cancer care.
Erlangen, BavariaAges 18 years+ - 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 - NCT05936346Recruiting
Check safety of a Salvia extract dietary supplement
This trial tests whether a Salvia-based extract (taken like a dietary supplement) is safe and well-tolerated in generally healthy adults. It also checks whether people can follow the study diet and activity routines during the trial.
LuganoAges 55–65 - NCT07466420Recruiting
Quercetin for fibrotic lung disease
This trial tests whether taking quercetin, a natural supplement, can help people with fibrotic interstitial lung diseases (a group of conditions that cause scarring in the lungs). If you have been diagnosed with idiopathic pulmonary fibrosis (IPF) or another fibrotic ILD and are on standard treatments, you may be able to join.
Heraklion, CreteAges 18 years+ - NCT07453693Recruiting
Urinary health drink mix study for women with frequent UTIs
This trial tests a dietary supplement drink mix designed to improve urinary health. It is for women who have had at least two urinary tract infections in the last six months and are currently at the start of a new UTI.
Harrison, New YorkAges 18–75 - 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+ - NCT07443943RecruitingPhase 2
Potato starch supplement for joint pain from hormone therapy
This trial studies whether a dietary supplement made from resistant potato starch can help reduce joint and muscle pain in people who are about to start aromatase inhibitor therapy for breast cancer or high risk. You take the supplement daily and report how you feel over 24 weeks.
Ann Arbor, MichiganAges Any age - 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 - 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 - 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+ - NCT07383311Recruiting
Natural supplements for memory and sleep
This study tests whether certain natural compounds (autophagy enhancers) can improve sleep in people with age-related memory concerns, including those with mild cognitive impairment and those with only subjective declines.
Greifswald, Mecklenburg-VorpommernAges 55–75 - NCT07378033Enrolling by invitation
Body fat reduction and weight management study
This study tests a new approach to help with weight loss and body fat reduction. It may be a good fit if you are an adult with a BMI in the overweight to moderately obese range and you are not currently using weight-loss medications.
Bangalore, KarnatakaAges 19–65 - 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+ - NCT07347743Recruiting
Probiotic supplement for crying and colic in healthy newborns
This trial tests whether a daily probiotic supplement can reduce excessive crying and colic in healthy, full-term newborns. If your baby is healthy and born at UZ Brussel, this study may help find a gentle way to soothe colic.
Jette, Brussels CapitalAges 1 day–2 weeks - NCT07341477Recruiting
Dietary supplement study for healthy 5-month-old infants
This study tests a dietary supplement for infants around 5 months old to see if it supports healthy growth and digestion. It may be a good fit if your baby is healthy, full-term, and not currently taking probiotics or certain medications.
Las PiñasAges 4 months–5 months - NCT07233148Recruiting
ALS, MND, or PLS registry study
This observational study creates a registry for people with ALS, MND, or PLS. It helps researchers better understand these conditions and find possible treatments.
Park City, UtahAges 18–110 - NCT07202403Enrolling by invitation
Dietary supplements and aging therapy trial
This trial tests dietary supplements and other treatments aimed at slowing the effects of aging. It is looking for generally healthy adults who are not taking immune-altering medications or other conflicting therapies.
New York, New YorkAges 18–75 - 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 - NCT07039747RecruitingPhase 2
Can a dietary supplement help people with irritable bowel syndrome?
This trial is testing if a dietary supplement can reduce symptoms of irritable bowel syndrome (IBS). You might qualify if you have been diagnosed with IBS, have moderate to severe symptoms, and are between 18 and 75 years old.
Rouen, FranceAges 18–75 - NCT07033013Recruiting
Study of an oral supplement for menopause hot flashes
This study tests an oral product to see if it can help with menopause symptoms like hot flashes. It is for women aged 40–65 who still have a uterus and are not on hormone therapy.
San Francisco, CaliforniaAges 40–65 - 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 - NCT06268665RecruitingPhase 2
Tart Cherry Juice for Preventing Nerve Damage from Chemotherapy
This study tests whether tart cherry juice can help prevent nerve damage (peripheral neuropathy) caused by the chemotherapy drug paclitaxel. Participants drink tart cherry juice daily during their 12 weeks of paclitaxel treatment.
Sacramento, CaliforniaAges 18 years+
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Common questions
- Are there clinical trials for dietary supplement?
- Yes. Clin2 currently lists 98 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.