Clinical trials
Supplementation clinical trials
Below are recruiting supplementation clinical trials, each written for real people, not researchers. We’re tracking 675 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT07487623Recruiting
Nutritional supplement for liver protection in hepatitis C
This trial tests whether a special nutritional supplement can protect the liver in people with chronic hepatitis C. If you have mild to moderate liver damage and meet the criteria, you may be able to join.
Guadalajara, JaliscoAges 18–69 - NCT07499414Recruiting
Bile acid supplement for gut health in adults
This study tests whether a bile acid supplement called 7-keto lithocholic acid can positively affect your gut bacteria and reduce disease risks. Healthy adults aged 18-65 are needed.
ReadingAges 18–65 - NCT07503496Recruiting
Biobran supplement for breast cancer chemo support
This trial tests if a supplement called Biobran (made from rice bran) can help support people with breast cancer who are receiving chemotherapy. It may reduce side effects or improve treatment tolerance.
TaichungAges 20–65 - NCT07528469Recruiting
Protein drinks and muscle strength in older adults
This study tests whether a daily protein drink can help improve muscle function and strength in people aged 60–85. Researchers will compare a new protein supplement called PeptiStrong with regular whey protein to see which works better.
LiverpoolAges 60–85 - 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 - 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 - 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 - 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 - 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+ - 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 - 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 - NCT07592260Recruiting
Nutrition supplements and vaccination uptake in rural Chad and Niger
This study tests whether giving nutrition supplements (SQ-LNS) to healthy young children increases vaccination rates and prevents malnutrition in rural communities in Chad and Niger. Researchers will also track children's health outcomes and interview families about their experiences.
Ngouri, Lac RegionAges 6 months–4.9 years - NCT07596966Recruiting
Propolis and Royal Jelly for High Blood Pressure
This study tests whether two bee products—propolis and royal jelly—can help reduce inflammation and stress in the body of people with high blood pressure. Researchers want to see if adding these supplements to your current blood pressure medication helps control the condition better.
Niterói, Rio de JaneiroAges 18–75 - NCT07597005Recruiting
Red Propolis Supplement for Kidney Disease Management
This study tests whether red propolis, a natural bee product, might help slow kidney disease progression in people with moderate to advanced chronic kidney disease who aren't yet on dialysis. Researchers believe its anti-inflammatory properties could support kidney health.
Rio de Janeiro, Rio de JaneiroAges 18–65 - NCT07605728RecruitingPhase 2
Probiotics to ease stomach problems from breast cancer treatment
This trial tests whether a special probiotic supplement (good bacteria) can reduce belly discomfort caused by abemaciclib, a hormone therapy drug for early breast cancer. You would take the supplement alongside your cancer treatment to see if it helps with stomach side effects.
TaipeiAges 18 years+ - NCT07609329Recruiting
Nutritional Support Before Sarcoma Surgery
This study tests whether special nutritional supplements given before surgery for bone or soft tissue sarcoma (a type of cancer) can help your body heal better and recover faster. You'll take oral supplements for at least a week before your planned surgery.
BrnoAges Any age - NCT07619638Recruiting
Microbiome Supplement for Mild-to-Moderate Ulcerative Colitis
This trial tests a specially designed supplement that aims to restore healthy gut bacteria in people with mild-to-moderate ulcerative colitis. The goal is to reduce inflammation and improve symptoms like rectal bleeding and bowel urgency.
IzmirAges 18–75 - NCT07636733Recruiting
Vitamin D for Gum and Bone Health in Periodontal Disease
This study tests whether vitamin D supplements can reduce inflammation and improve healing in people with gum disease, ranging from mild gingivitis to advanced periodontitis. Researchers will compare how vitamin D affects different stages of gum disease.
RizeAges 18–70 - NCT07641075Recruiting
High-Dose Vitamin D Effects in Experienced Athletes
This study tests whether high-dose vitamin D supplements improve athletic performance, brain function, and body composition in experienced athletes. Researchers will measure hormones, muscle strength, thinking ability, and muscle mass over time.
Katowice, Mikołowska 72aAges 17–60 - 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+ - NCT07645898Recruiting
Glucose monitoring study of cornstarch in glycogen storage disease
This study uses a glucose monitor (a small sensor you wear) to measure how your blood sugar responds after eating raw cornstarch, a common treatment for glycogen storage disease type I. The goal is to understand how well cornstarch helps keep your blood sugar steady.
Naples, NapoliAges 18 years+ - NCT07648706Recruiting
Vitamin D supplements to prevent pregnancy complications
This study tests whether vitamin D supplements can help prevent preeclampsia (a serious pregnancy condition with high blood pressure) in women with low vitamin D levels. You would take vitamin D pills during pregnancy and be monitored to see if this reduces your risk.
Sanaa, Maeen DistrictAges 18–40 - NCT07651709Recruiting
Bone Health During Pregnancy in Women With Epilepsy
This study looks at how epilepsy and epilepsy medications affect bone health during pregnancy and after delivery. Researchers want to understand how to keep bones strong while you're pregnant and taking seizure medications, which can sometimes weaken bones.
ZhejiangAges 18 years+ - NCT07654777Recruiting
Vitamin D for better performance in healthy adults
This study tests if taking vitamin D supplements can help young, healthy adults stay sharp and perform well under stress. You may be eligible if your current vitamin D level is low but not severely low.
Silver Spring, MarylandAges 18–40
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Common questions
- Are there clinical trials for supplementation?
- Yes. Clin2 currently lists 675 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.