Clinical trials
Supplementation clinical trials
Below are recruiting supplementation clinical trials, each written for real people, not researchers. We’re tracking 680 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT07670234Recruiting
Dietary Supplements and Cancer Treatment
This study looks at how dietary supplements (like vitamins and herbs) affect cancer patients who are on treatment. It checks if supplements cause side effects, change how medications work, or interact with each other.
RabatAges 18 years+ - 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 - NCT07166965Enrolling by invitation
Supplement for Heart Failure: Ketones and Hawthorn
This trial tests whether adding a supplement containing ketones and hawthorn extract can help people with heart failure feel better and improve their heart function. You will take the supplement daily and have imaging scans and exercise tests to monitor your progress.
Philadelphia, PennsylvaniaAges 18 years+ - NCT07058922Enrolling by invitationEarly Phase 1
Beetroot powder for resistant hypertension
This study tests if a powdered beetroot supplement can improve blood flow in the small blood vessels of people with resistant hypertension. If you have hard-to-treat high blood pressure, this might be an option for you.
Rio de Janeiro, Rio de JaneiroAges 18 years+ - NCT07035132Enrolling by invitation
Special supplement for patients with cancer at risk of malnutrition
This trial tests a special liquid supplement for patients with head, neck, lung, rectal, or esophageal cancer who are having radiation and are malnourished or at risk. The supplement is designed to be easier to digest if you have stomach or gut issues.
AlicanteAges 18 years+ - NCT06895018Enrolling by invitation
Grape Drink Trial for Diabetes and Fatty Liver
This study tests a drink made from grape pomace (a natural byproduct) that is rich in polyphenols—compounds that may help the liver and heart. Participants have type 2 diabetes and mild fatty liver, and researchers want to see if the drink improves liver health, blood sugar, and gut bacteria over several months.
NaplesAges 35–70 - NCT06801886Enrolling by invitationPhase 3
Silymarin for better kidney transplant success
This trial tests if adding silymarin (a milk thistle extract) to standard anti-rejection medicines helps protect the new kidney from damage. It may improve how well the transplanted kidney works over time.
MartinAges Any age - NCT06749808Enrolling by invitation
Nutritional supplement study for wellness and nutrient absorption
This trial tests whether a nutritional supplement can improve wellbeing and help your body absorb nutrients better. It might be a good fit if you are generally healthy and not already taking high-dose carotenoid supplements.
Provo, UtahAges 20–65 - NCT07764991RecruitingPhase 2
Lactoferrin supplement for diabetic kidney disease
This study tests whether taking a lactoferrin supplement can help people with type 2 diabetes and chronic kidney disease (stage 3 or 4) by reducing protein in their urine, which is a sign of kidney damage. It may offer a new way to slow the progression of kidney disease.
CairoAges 18–75 - NCT07766720Recruiting
Eggshell membrane and turmeric supplements for exercise recovery
This trial tests whether taking eggshell membrane, curcumin (turmeric), or both together can help your muscles recover faster after intense exercise. It may reduce soreness and help you bounce back sooner.
College Station, TexasAges 18–40 - NCT07766395Recruiting
Daily powder for women's wellness and fitness
This trial tests a daily powder supplement designed to support lean muscle, hormone balance, digestion, and skin, hair, and nail health. If you're an active woman with some common wellness concerns, this study may help you see if the supplement makes a difference.
Las Vegas, NevadaAges 21–45 - 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 - 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 - 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 - NCT07763977Enrolling by invitation
Vitamin D and iron study for obsessive-compulsive disorder
This study tests whether vitamin D and iron levels affect brain function linked to self-control in people with OCD. It may help find new ways to improve treatment.
Guangzhou, GuangdongAges 14–45 - NCT07703137Enrolling by invitation
NAD Supplement for Parkinson's Disease Study
This study tests whether a supplement called NAD (a natural substance that helps cells produce energy) can improve symptoms in people with Parkinson's disease. You would take the supplement daily for several weeks, and researchers will check your movement, thinking, and overall well-being.
Oklahoma City, OklahomaAges 55–85 - NCT07761546Enrolling by invitation
Ai-test: microbiome nutrition for low testosterone
This study tests whether a special diet can improve symptoms of low testosterone in men. It is intended to help men with certain symptoms like a low sex drive or trouble having erections and whose blood tests show low to borderline testosterone levels.
AydinAges 30–65 - NCT07757529Recruiting
Sage extract for thinking and memory in middle-aged adults
This study tests whether a daily sage extract supplement can improve thinking, focus, and memory in healthy middle-aged adults. If it works, it could offer a natural way to support brain health.
College Station, TexasAges 40–60 - NCT07399886Recruiting
Plant or dairy shake for cancer and heart patients at risk of malnutrition
This study compares two types of nutrition shakes (one plant-based and one dairy-based) for patients who are undernourished due to cancer, lung disease, heart problems, or recovery from surgery. It aims to see if the plant-based shake is just as good as the dairy shake.
Nijmegen, GelderlandAges 18 years+ - NCT05705414RecruitingEarly Phase 1
Amino acid supplement during dialysis to improve energy in kidney disease
This early-stage study tests whether taking amino acids during hemodialysis can help people with end-stage kidney disease feel better and maintain strength. It may help by supporting nutrition during dialysis, but it’s mainly meant to gather early safety and benefit information.
San Antonio, TexasAges 18–64 - NCT04288635Recruiting
Testing a nutrient supplement for energy problems in septic shock
This study looks at whether a metabolite (nutrient) supplement can help the body’s cells work better when someone is in septic shock. It is done in the ICU, and it may benefit people with sepsis who still have poor circulation and high lactate levels despite standard treatment.
Angers, Maine et LoireAges 18 years+ - NCT06766604Recruiting
Super-GDF9 for egg maturation in women with PCOS
This study tests a protein called Super-GDF9 added to the lab process of maturing eggs from very small follicles. It may help women with PCOS produce more usable eggs for in vitro fertilization (IVF).
Ho Chi Minh CityAges 18–38 - NCT05477901Recruiting
Cash transfers study in mothers and children
This study checks whether receiving cash support (a government cash transfer program) helps children’s brain and development. Families will be assessed, and children must be able to take part in activities that may include an MRI scan.
New York, New YorkAges 23–45 - NCT07479173Recruiting
How a study ingredient affects protein digestion in healthy adults
This trial tests whether a study ingredient called P24 changes how your body breaks down and uses protein from a meal. It may help researchers understand ways to support muscle health as we age.
Davis, CaliforniaAges 45–75
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Common questions
- Are there clinical trials for supplementation?
- Yes. Clin2 currently lists 680 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.