Clinical trials
Supplementation clinical trials
Below are recruiting supplementation clinical trials, each written for real people, not researchers. We’re tracking 671 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT05846880RecruitingEarly Phase 1
Vitamin D3 supplement for people with multiple myeloma
This early-phase study tests whether taking a Vitamin D3 supplement can be safe and helpful for people with symptomatic multiple myeloma. It may help researchers understand how Vitamin D affects the disease and how patients tolerate treatment.
Augusta, GeorgiaAges 18 years+ - NCT05410782Recruiting
Prenatal supplements to improve sperm quality
This study tests whether a prenatal supplement for men can improve sperm quality in people trying to conceive. It focuses on improving semen results when there is low count, weaker movement, or abnormal shape.
Mississauga, OntarioAges 18–45 - NCT07212907Recruiting
Probiotic and Ginger for Stomach Discomfort
This trial tests whether a combination of probiotics and ginger can improve symptoms and quality of life for people with functional dyspepsia (a condition causing ongoing stomach discomfort). Participants will take the supplement for several weeks and report how they feel.
IstresAges 18 years+ - NCT07219498Recruiting
Probiotics for muscle soreness after exercise
This trial tests whether taking a probiotic supplement for 5 weeks can reduce muscle soreness after exercise. If you exercise regularly and are generally healthy, you may be able to join.
Minneapolis, MinnesotaAges 18–30 - NCT06918054RecruitingPhase 4
Liver protection for kids with leukemia
This trial tests if a medication can protect the liver during chemotherapy for children and teenagers newly diagnosed with acute lymphoblastic leukemia (ALL). It aims to reduce liver damage caused by treatment.
CairoAges 2–18 - NCT06555575RecruitingPhase 2
CoQ10 supplement for women starting IVF
This trial tests two forms of coenzyme Q10 (ubiquinone vs. ubiquinol) to see if either improves egg quality or IVF success. It may be a good fit if you are between 37 and 43, doing your first IVF cycle, and have certain hormone levels within a normal range.
Toronto, OntarioAges 37–43 - NCT07210658Recruiting
Nutritional supplement tolerance study in children
This study is testing a new nutritional drink or powder to see if children like it, tolerate it well, and can stick with it. It replaces your child's current supplement with a new one, and researchers will check how it affects their digestion and overall health.
NottinghamAges 1–16 - NCT07208279Recruiting
Cognitive Vitality Study: Can Axolt help memory?
This clinical trial is testing whether a special dietary supplement called Axolt can help keep your memory and thinking sharp as you get older. It is for healthy adults 55 and older who live independently and have no major memory problems.
West Palm Beach, FloridaAges 55 years+ - NCT07210099Recruiting
Olive Supplement and Fat Burning During Exercise
This study tests whether a supplement made from olives (OliPhenolia®) can help your body burn fat more efficiently during exercise. It may be a good fit if you're a healthy, active adult in the UK.
CambridgeAges 21 years+ - NCT05043116RecruitingPhase 2
Vitamin D for preventing asthma-like flare-ups in young children
This study tests whether a high-dose vitamin D supplement can help preschool children have fewer acute asthma-like symptoms (coughing, wheezing, or trouble breathing) that require hospital care. It may help by supporting the immune and airway system, but you can only join if the child meets several safety and treatment criteria.
Gentofte Municipality, GentofteAges 1 year–5.9 years - NCT06936137RecruitingPhase 3
Probiotics for weight gain from antipsychotic medication
This trial tests if taking a probiotic supplement can help prevent or reduce weight gain caused by certain antipsychotic medications. It is for people with schizophrenia who have gained significant weight after starting these medications.
Cairo, AbbassiaAges 18–45 - NCT07199829Recruiting
Vitamin D and K for military healthcare workers
This study tests whether taking vitamin D3 and K2 supplements can improve health in military healthcare workers who have low vitamin D levels. If you qualify, you will stop any current vitamin D or K supplements and take the study supplement for 4.5 months.
Tacoma, WashingtonAges 18–69 - NCT06939244Recruiting
Krill oil for muscle recovery after exercise in older adults
This trial tests whether taking krill oil helps people 60 and older recover faster from muscle-straining exercise. If you do light resistance exercise less than 1 hour per week and have no major health issues, you may qualify.
Glasgow, OtherAges 60 years+ - NCT06937190Recruiting
Does creatine before sleep improve power in active women?
This study tests if taking a small dose of creatine before bed helps women who exercise regularly perform better on power-based activities like jumping and sprinting. It's designed for healthy, young women who already do resistance training and want to see if a simple supplement can boost their nighttime recovery and next-day performance.
Shabestar, East Azerbaijan ProvinceAges 18–25 - 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 - NCT07195318Recruiting
Fisetin supplement study for healthy aging
This study tests whether a natural supplement called fisetin can help people age more healthily. It is for Danish-speaking adults aged 50 and older who are not taking certain other supplements or medications.
HvidovreAges 50 years+ - NCT07178769Recruiting
Testing a supplement for lowering cholesterol
This trial tests a nutritional supplement with bergamot, artichoke, and other natural ingredients to see if it can safely lower cholesterol in people with moderately high LDL. It may be an option for those not currently on other cholesterol treatments.
Madrid, MadridAges 18 years+ - NCT06949930Recruiting
Optimizing child health visits for better nutrition
This trial tests a new way to deliver essential health and nutrition advice to families with young children (ages 1–5) during regular doctor visits. It aims to make sure children get the care they need.
NairobiAges 15 years+ - NCT07165431Recruiting
Postbiotic supplement study for overweight and obesity
This study tests whether taking a daily postbiotic gummy for 12 weeks can improve body composition and metabolic health in people with overweight or obesity. It may help if you have stable weight and no major health conditions like diabetes.
Pamplona, NavarreAges 18–70 - NCT07173049Recruiting
Speech help for kids using a communication board
This study tests whether a communication board can help children with cerebral palsy or similar conditions speak more clearly. It is designed for kids who have trouble being understood but can still say a few words.
Madison, WisconsinAges 7–17 - NCT06950463Recruiting
Circuit training for bone health after menopause
This trial tests whether a specific exercise program (circuit training) can improve bone density in women after menopause who have low bone mass. It may help strengthen bones and reduce fracture risk.
CairoAges 50–60 - NCT06087783Recruiting
Nutrition supplement study for gynecologic cancer patients on chemo
This study tests whether a special protein, leucine, and vitamin D drink can help women with gynecologic cancer stay stronger during platinum-based chemotherapy. If you're starting your first chemo cycle and can do most daily activities, you may be eligible.
Pavia, ItalyAges 18 years+ - NCT06950203Recruiting
Fish oil supplement for sperm quality
This study tests whether a special fish oil supplement (EPAX EVOLVE 05) can improve sperm movement in men with low sperm motility. It may help if you have been told your sperm are not moving well and you are willing to take a sperm test.
OsloAges 18–55 - NCT07162285Enrolling by invitation
Bubble CPAP for Preterm Babies with Breathing Problems
This trial tests a special breathing support called bubble CPAP, given right after birth in the delivery room, to help preterm babies (born before 34 weeks) who are having trouble breathing. It aims to see if starting this treatment early can improve their breathing and health.
DhakaAges 5 minutes–30 minutes
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Common questions
- Are there clinical trials for supplementation?
- Yes. Clin2 currently lists 671 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.