Clinical trials
Dietary Supplement clinical trials
Below are recruiting dietary supplement clinical trials, each written for real people, not researchers. We’re tracking 98 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT07502924Recruiting
Testing Geranylgeraniol supplements for muscle health
This study tests whether taking a supplement called geranylgeraniol (GG) can improve muscle health. It is looking for physically active adults who are willing to follow specific dietary rules and avoid certain foods and supplements during the study.
Saint Charles, MissouriAges 30–60 - NCT07471048Recruiting
Magnolia supplement for psoriasis immune health
This trial tests whether a magnolia dietary supplement can improve immune markers in people with psoriasis. If you have stable psoriasis (for at least 6 months) and are not using certain strong medications, you may be able to participate from home by using a smartphone app and mailing blood samples.
Englewood, New JerseyAges 18 years+ - NCT05723913Recruiting
Test functional foods on blood sugar and gut bacteria
This study looks at how eating specific functional foods affects blood sugar after meals and changes in gut bacteria. It may help people understand ways to support healthy blood sugar and digestion, but it’s not for people with diabetes.
Mexico City, Mexico CityAges 18–60 - NCT07497698Recruiting
Saffron supplement for better sleep in adults
This study tests whether taking a saffron extract supplement can help improve sleep in middle-aged adults with mild to moderate sleep troubles. You would take a daily supplement for a few weeks and report how well you sleep.
Granada, GranadaAges 18–65 - NCT06810466Recruiting
Dietary supplements for mild high cholesterol
This study tests two dietary supplements to see if they can improve cholesterol levels in people with mildly high cholesterol who are otherwise healthy and at low risk for heart disease.
Bologna, ItalyAges 18–69 - 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 - NCT05869812RecruitingPhase 2
HMB supplement study to help recovery after surgery
This trial tests whether taking an HMB supplement after surgery can help improve muscle size and function during recovery. It may be helpful if you are a female athlete planning rehab at a specific physical therapy clinic.
Overland Park, KansasAges 18–45 - NCT07585994Recruiting
Probiotic supplement for long-standing type 1 diabetes
This study tests whether taking a specific probiotic (a beneficial bacteria) for 4 weeks can improve immune function and metabolism in people who have had type 1 diabetes for at least 5 years. Researchers believe this probiotic may help the body's remaining insulin-producing cells work better.
AmsterdamAges 18 years+ - NCT07831317Recruiting
Probiotic for digestive comfort in women
This study tests a daily probiotic supplement to see if it helps with gas and bloating in women who also have signs of hormonal imbalance. If you qualify, you'll take the supplement and track your symptoms over the study period.
San Francisco, CaliforniaAges 25–45 - NCT07716904Recruiting
Whey Protein and Adaptogen Supplement for Active Men
This study tests whether a whey protein drink with an adaptogen (ashwagandha) can help physically active men perform better and recover faster. You would keep your usual diet and exercise routine while taking the supplement.
Brighton, East SussexAges 18–45 - NCT07806838Recruiting
Dietary supplements to preserve muscle during GLP-1 weight loss
This study looks at whether certain dietary supplements can help preserve muscle mass while you are taking a GLP-1 medication for weight loss. You would take the supplements or a placebo for a period while continuing your GLP-1 treatment, and the researchers will measure changes in your muscle and strength.
Los Angeles, CaliforniaAges 18 years+ - NCT07651514Recruiting
Magnesium and Melatonin for Better Sleep and Leg Cramps
This study tests whether taking daily magnesium and melatonin supplements can help improve sleep quality and reduce nighttime leg cramps in adults. You'll wear a special ring to track your sleep and use a smartphone app to log your experiences.
Palm Beach Gardens, FloridaAges 40–75 - NCT07672938Recruiting
Olive supplement and Mediterranean diet for mild memory loss
This trial tests whether a dietary supplement made from olive polyphenols, combined with following a Mediterranean diet, can help protect thinking and memory in people with mild cognitive impairment (MCI). It may be a good fit if you have early memory changes and want to try a nutrition-based approach.
Thessaloniki, Central MacedoniaAges 50–85 - NCT06993103RecruitingPhase 4
Pasteurized donor milk for newborns of mothers with diabetes
This trial tests if giving pasteurized donor human milk to newborns of mothers with diabetes can help their health. It compares donor milk to regular baby formula as a supplement when extra feeding is needed soon after birth.
Brisbane, QueenslandAges birth–2 days - NCT05357157Recruiting
Electroacupuncture for fibromyalgia pain and quality of life
This trial studies whether electroacupuncture can reduce fibromyalgia pain and improve quality of life. It also looks at changes in certain immune cells, which may help explain how treatments work.
HeraklionAges 18–80 - NCT05926713Recruiting
Diet supplement plus exercise for muscle loss with lung disease
This trial studies whether adding a dietary supplement to exercise can improve muscle strength in people with muscle loss (sarcopenia) who also have lung disease such as COPD or ILD. It may help you build strength and function without needing urgent hospital care.
TaichungAges Any age - NCT06261554Recruiting
Low-dose sesame oral immunotherapy for children
This study tests if a very low daily dose of sesame protein (given as a powder under the tongue) can help children with sesame allergy become less sensitive to sesame. The goal is to reduce the risk of severe allergic reactions from accidental exposure.
Warsaw, Masovian VoivodeshipAges 3–17 - NCT07846371Recruiting
Dietary supplement to lower PFAS levels in firefighters
This trial tests whether a daily dietary supplement can reduce levels of PFAS chemicals in the blood. If you are a male firefighter with past exposure to PFAS, this study might help you lower these chemicals.
Chicago, IllinoisAges 18 years+ - NCT07802002Recruiting
Dietary supplement to prevent bowel injury during radiation for rectal cancer
This trial tests whether a special dietary supplement can help protect the rectum from radiation damage during chemoradiation for locally advanced rectal cancer. If it works, it may reduce painful bowel symptoms like frequent stools and cramping.
Guangzhou, GuangdongAges 18–75 - 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 - NCT07760506Recruiting
Quercetin and CoQ10 supplements for health in sedentary adults
This study tests whether two natural supplements, quercetin and CoQ10, can reduce inflammation and improve metabolic health in adults who are not very active. If you are overweight and at risk for prediabetes, this trial might help you understand how these supplements affect your body.
Tampa, FloridaAges 50–75 - NCT07752628Enrolling by invitation
F-60 safety trial for children with severe acute malnutrition
This trial tests a new food supplement (F-60) for children hospitalized with severe acute malnutrition. It aims to see if F-60 is safe and can help children recover.
DhakaAges 6 months–4.9 years - NCT07740967Recruiting
Collagen and omega supplements for middle-aged women
This study tests whether daily collagen and omega-3 supplements can improve health in healthy middle-aged women. You would take the supplements for a period and have your health measured.
LoughboroughAges 35–65 - NCT07729930Recruiting
Creatine supplement study for healthy middle-aged women
This study is testing a creatine supplement (a substance that may help with energy and muscle function) in healthy middle-aged women. You may join if you are between 35 and 65, a non-smoker, and have a certain activity level.
LoughboroughAges 35–65
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Common questions
- Are there clinical trials for dietary supplement?
- Yes. Clin2 currently lists 98 recruiting dietary supplement 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 dietary supplement 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 dietary supplement 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.