Clinical trials
Supplementation clinical trials
Below are recruiting supplementation clinical trials, each written for real people, not researchers. We’re tracking 672 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT07592013Enrolling by invitation
Ancestry Supplements for Fatty Liver Disease
This study tests whether a special supplement (made from cacao, nopal, and crickets) can help improve fatty liver disease in people with excess body fat. Fatty liver disease happens when fat builds up in the liver, and this trial investigates whether these natural ingredients can reduce that buildup.
Guadalajara, GuadalajaraAges 18–60 - NCT07591012Recruiting
Probiotic Supplements for Ulcerative Colitis Remission
This trial tests whether taking sodium butyrate (a short-chain fatty acid) and a specific probiotic yeast called Kluyveromyces marxianus can help keep ulcerative colitis in remission and prevent flare-ups. You'd need to be in remission (symptom-free with no active inflammation) when you start.
PadovaAges 18–75 - NCT06424756RecruitingPhase 2
Antioxidant supplement for blood vessel health
This study tests whether an antioxidant supplement can improve blood vessel health in healthy adults. It compares the supplement's effects in non-Hispanic Black and non-Hispanic White participants to see if there are differences in how blood vessels respond.
Athens, GeorgiaAges 18–75 - NCT07580846Recruiting
Creatine Supplement for Energy and Strength in Menopausal Women
This 12-week study tests whether a creatine-based nutritional supplement helps menopausal women maintain muscle strength and energy. Creatine is a natural compound that helps muscles work better during exercise.
Madrid, MadridAges 40–75 - NCT07577505Recruiting
Histidine supplement to boost immunity in colorectal cancer
This study tests whether taking a histidine supplement (an amino acid building block) alongside standard colorectal cancer treatment helps your immune system fight the cancer better. Researchers want to see if this simple addition can improve outcomes for people with stage II or higher colorectal cancer.
Shanghai, Shanghai MunicipalityAges 18–80 - NCT07585045Recruiting
Magnesium Supplements for Fibromyalgia Not Helped by Standard Drugs
This study tests whether taking magnesium by mouth can reduce fibromyalgia pain in people whose symptoms don't improve with common medications like amitriptyline, duloxetine, or pregabalin. Magnesium is a mineral that may help relax muscles and ease pain.
Lahore, Punjab ProvinceAges 18–65 - NCT07583251RecruitingPhase 1
Safety of a supplement for mild memory loss
This trial tests an oral supplement called gamma glutamylcysteine (GGC) in people with mild cognitive impairment (MCI) to see if it is safe and well-tolerated. It may help by supporting the body's natural defenses against cell damage.
Pittsburgh, PennsylvaniaAges 55–80 - NCT07579429RecruitingPhase 2
Nicotinamide Riboside Supplement for MDS
This trial tests whether a supplement called nicotinamide riboside can help people with a blood disorder called MDS (myelodysplastic syndrome) or early warning signs of it. The supplement is meant to support your bone marrow's ability to make healthy blood cells.
Aurora, ColoradoAges 18 years+ - NCT07583186Recruiting
How Eating More Eggs During Pregnancy Affects Baby's Brain Development
This study looks at whether pregnant women who eat more eggs can help their babies' brain development. Researchers will follow you and your baby from pregnancy through the first year of life to see if increased egg consumption makes a difference.
Kansas City, KansasAges 18 years+ - NCT07579078Enrolling by invitation
Vitamin D and Brain Activity in Women With Depression
This study tests whether vitamin D supplements can improve brain wave patterns in women diagnosed with depression who have low vitamin D levels. Researchers will measure brain activity using EEG (a non-invasive test that records electrical signals from the brain) before and after vitamin D treatment.
DhakaAges 20–40 - NCT06723119Recruiting
Resveratrol supplement for exercise and recovery in men
This study tests whether a daily supplement called resveratrol (found in some foods) can help active men exercise better and recover faster. You'll take either resveratrol or a placebo, follow a diet, and complete fitness tests.
Orlando, FloridaAges 18–40 - NCT07564674Recruiting
How Your Body Processes Broccoli Extract Supplements
This study tests how well your body absorbs and uses broccoli extract supplements. Researchers want to understand if these supplements deliver their plant-based benefits effectively, which could help improve future supplement design.
Corvallis, OregonAges 18–60 - NCT07563582Recruiting
Iron Supplement for Children with Celiac Disease and Low Iron
This study tests whether a special iron supplement taken by mouth helps children who have celiac disease (a condition where the body can't digest gluten) and low iron levels or anemia (not enough healthy red blood cells). The iron supplement is designed to be easily absorbed by the body.
Genova, ItalyAges 8–18 - NCT07559227Recruiting
How obesity affects gut health and blood vessel function
This study compares people with normal weight to people with obesity who are otherwise healthy to understand how body weight affects gut bacteria, immune function, and blood vessel health. Results may help explain why some people with obesity stay healthier than others.
Muncie, IndianaAges 18–55 - NCT07555093Recruiting
Micronutrient Supplements and Digital Health Tracking in Pregnancy
This study tests whether taking micronutrient supplements (vitamins and minerals) along with a digital app or text reminders helps pregnant women stay on track with their prenatal care. The goal is to improve nutrition and health outcomes during pregnancy.
Mataram, West Nusa TenggaraAges 14 years+ - NCT06576479Recruiting
Supplement study for kidney disease and weight loss
This study tests if a special drink can improve nutrition and quality of life in people with chronic kidney disease (CKD) who are not on dialysis. It is for those who have lost weight or have poor appetite.
Guadalajara, JaliscoAges 18–90 - NCT07546591Recruiting
Lactoferrin supplement study for female endurance athletes
This study tests whether a natural protein called lactoferrin can improve iron levels and athletic performance in women who exercise regularly. If you're a female runner, cyclist, or swimmer with low iron stores, this trial might help you feel stronger during training.
Saint Charles, MissouriAges 18–45 - NCT07543016Recruiting
Amino Acids and Exercise for FSHD Muscle Weakness
This study tests whether amino acid supplements combined with exercise can help people with FSHD (a genetic muscle disease) build strength and reduce fatigue. Researchers will compare participants who receive amino acids plus exercise training to a control group.
Voghera, PaviaAges 18–50 - NCT06700044Recruiting
Probiotics for high-risk pregnancy
This study tests whether taking a probiotic supplement during pregnancy can help prevent complications in women at risk for preeclampsia. You would take a daily probiotic or placebo pill from about 20 weeks until delivery.
LundAges 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 - NCT07533890Recruiting
Probiotics and gut health in children with inflammatory bowel disease
This study tests whether a multi-strain probiotic supplement can change the gut bacteria in children and teens with inflammatory bowel disease (IBD). Researchers will collect stool samples to see if the probiotics help restore healthy gut bacteria and potentially improve symptoms.
BernAges 5–18 - 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 - NCT07508657RecruitingPhase 4
Progesterone after letrozole for intrauterine insemination
This trial tests whether taking progesterone after a type of fertility treatment called IUI can improve success rates. The study focuses on people who are using a drug called letrozole to stimulate the ovaries.
CopenhagenAges 18–37 - NCT06753565RecruitingPhase 2
L-carnitine supplement for rheumatoid arthritis
This trial tests whether adding L-carnitine (a natural substance) to your current treatment helps reduce rheumatoid arthritis symptoms. It could be an option if your arthritis is still active despite taking standard medications.
Cairo, DemerdashAges 18–60
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Common questions
- Are there clinical trials for supplementation?
- Yes. Clin2 currently lists 672 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.