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
- NCT07299942Recruiting
Beta-glucan supplement for weight loss in women
This trial tests whether taking a beta-glucan supplement (a type of fiber) during a calorie- and carb-restricted diet helps with losing body weight and fat, controlling appetite, and managing hunger hormones. It is for healthy women who are overweight or obese and not following a special diet.
GlasgowAges 18–60 - NCT07303595Recruiting
Postnatal multivitamin supplement trial for new moms
This trial tests a multivitamin supplement designed for new mothers. It looks at how the supplement affects your health in the weeks after giving birth. If you are about 4 weeks postpartum and had a healthy pregnancy, this study might be for you.
Athens, GeorgiaAges 18 years+ - NCT07304505Recruiting
Probiotics for adults with rheumatoid arthritis
This study tests whether a daily probiotic supplement can help adults with rheumatoid arthritis. You must have a stable RA treatment plan and be willing to take the probiotic for the duration of the study.
Chicago, IllinoisAges 18 years+ - NCT07311434Recruiting
Sleep quality and morning wellness study
This study tests if a dietary supplement can help people with mild sleep issues sleep better and feel more refreshed in the morning. It's for generally healthy adults who are not taking sleep medications or other supplements.
San Francisco, CaliforniaAges 22–59 - NCT07315282Recruiting
Iron supplements for overweight women: effects on blood sugar
This study tests whether oral iron supplements can improve how the body uses insulin and manages blood sugar in overweight or obese women with low iron stores.
BeirutAges 18–45 - NCT07322653Recruiting
Supplements to improve fitness in older adults with muscle loss
This study tests whether a special drink (MediDrink Platinum+) and a bean protein supplement can help improve fitness and muscle strength in older adults who are malnourished and have muscle loss. If you are 60 or older, underweight, and have lost muscle, this trial may offer a way to see if these supplements can help you get stronger.
BudapestAges 60 years+ - NCT07324746Recruiting
Herbal supplement for osteoarthritis pain
This trial tests whether a herbal supplement helps people with osteoarthritis of the knee or hip feel less pain and move better. If you have moderate to severe pain and are able to walk, this study might be a good fit.
LondonAges 18 years+ - NCT07329647Recruiting
Brain nutrition study for cognitive decline
This trial tests whether a nitrate-rich food supplement can improve blood flow in the brain and help thinking and memory. It is for people with small vessel disease in the brain or diabetes who are at risk for cognitive decline.
CoimbraAges 18 years+ - NCT07335991Recruiting
Vitamin A for children with scoliosis and low vitamin A
This trial tests whether vitamin A supplements can help children with idiopathic scoliosis (a spinal curve with no known cause) who also have low vitamin A levels. It aims to see if correcting the deficiency can improve the spine curve or slow its progression.
Wenzhou, ZhejiangAges 6–15 - NCT07344636Recruiting
NR supplements and zone 2 training for metabolism
This trial tests whether taking nicotinamide riboside (a vitamin-like supplement) helps your body burn fuel better during moderate exercise, known as zone 2 training. It may benefit healthy adults who want to improve their workout efficiency.
Hong Kong, Please SelectAges 18–80 - NCT02922894RecruitingPhase 4
Testing sleep apnea care in people with spinal cord injury
This study looks at treatment for sleep apnea (breathing pauses during sleep) in adults with a spinal cord injury. If you qualify, the trial team may help manage sleep-related breathing problems and track how well the treatment works.
Detroit, MichiganAges 18–89 - 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 - NCT07359625Recruiting
Study on ketone drinks and insulin health
This study tests if drinking a ketone supplement can improve how your body responds to insulin, which affects blood sugar control.
Aarhus NAges 55–70 - NCT07362251Recruiting
Testing a probiotic supplement in healthy adults
This study is testing a multi-strain probiotic supplement (Smile Probio 45B) to see how well healthy adults tolerate it. You may be able to join if you are generally healthy, not taking antibiotics or other probiotics, and within a normal weight range.
Trikala, ThessalyAges 18 years+ - NCT07364162RecruitingPhase 2
Ketone Drink for Confusion in the ICU
This trial tests if giving a special ketone drink through a feeding tube or by mouth can help clear confusion in ICU patients. It might speed up recovery and improve thinking.
Nashville, TennesseeAges 18 years+ - NCT07367412Recruiting
Zinc supplements for infection prevention in older hospital patients
This study tests whether giving zinc supplements to older patients (65+) in the hospital can help prevent infections. It is for patients at Herlev Hospital who are not already taking high doses of zinc or receiving certain specialized treatments.
Herlev, CopenhagenAges 65 years+ - NCT07371975Recruiting
Study of gut health supplement for digestive symptoms
This study tests a daily supplement containing butyrate and plant compounds to see if it can improve gut symptoms like bloating, gas, and discomfort. It is for people who have frequent gut issues but have not been diagnosed with a chronic gut disease like IBS.
Fort Lauderdale, FloridaAges 25–70 - NCT07374042RecruitingPhase 3
A supplement to protect muscle in advanced kidney disease
This trial tests whether a special diet supplement (Ketoanalogue) can help protect your muscles while you follow a moderate protein diet. It is for people with chronic kidney disease stage 4 or 5 who are not on dialysis or have not had a kidney transplant.
Clermont-FerrandAges 18–100 - NCT07380412Recruiting
Supplement study for ADHD med side effects
This trial tests if a dietary supplement can help reduce common side effects of stimulant medications for ADHD, like trouble sleeping or feeling irritable. If you take a stable dose of ADHD medication and are dealing with these issues, you may be able to join.
Las Vegas, NevadaAges 18–55 - NCT07397572Recruiting
Iron pills and anemia after sleeve gastrectomy
This study tests whether giving iron supplements after sleeve gastrectomy surgery helps prevent or treat anemia. It may be a good fit if you are planning to have this weight-loss surgery and can commit to 6 months of follow-up.
Cairo, Al-Manial CairoAges 18–65 - NCT02947750RecruitingPhase 2
Exercise study in people with kidney disease
This Phase 2 study tests how engaging in supervised exercise affects the body’s blood-vessel responses in people with chronic kidney disease (CKD) who don’t exercise regularly. It may help researchers understand whether exercise could be beneficial for CKD-related health changes.
Atlanta, GeorgiaAges 18–75 - NCT07675200Recruiting
Miricell study on healthy aging and cell cleanup
This study tests whether a supplement called Miricell can improve markers of healthy aging and help your cells clean out damaged parts. If you are healthy, between 40 and 70 years old, and willing to follow a specific diet and visit schedule, you may be able to join.
Canfield, OhioAges 40–70 - NCT03529019RecruitingEarly Phase 1
Nutrition study for poor blood flow to a limb
This early-phase study looks at how nutrition affects people who have very poor blood flow to a limb (critical limb ischemia). It’s exploring whether nutrition changes health outcomes and safety for this condition.
Boston, MassachusettsAges 18–99 - NCT06488638Recruiting
Beetroot juice supplement for lung fibrosis
This trial tests whether a beetroot juice drink (rich in nitrates) can help people with idiopathic pulmonary fibrosis breathe better and exercise more. It's a small pilot study to see if it's safe and worth studying further.
SouthamptonAges 18–85
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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.