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
- 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 - NCT07352618Enrolling by invitation
Omega-3 supplements for blood sugar and cholesterol in type 2 diabetes
This study tests whether adding omega-3 supplements to your regular diabetes treatment can improve blood sugar control and cholesterol. It may help people with type 2 diabetes who are already on medication.
DhakaAges 25–75 - NCT07341477Recruiting
Dietary supplement study for healthy 5-month-old infants
This study tests a dietary supplement for infants around 5 months old to see if it supports healthy growth and digestion. It may be a good fit if your baby is healthy, full-term, and not currently taking probiotics or certain medications.
Las PiñasAges 4 months–5 months - NCT07341789Enrolling by invitation
Vitamin B12 and orange extract for better performance
This study tests whether vitamin B12, natural orange extract, or both together can improve your physical and mental performance. It is for healthy men who exercise regularly and eat citrus fruits.
La Ñora, MurciaAges 18–45 - NCT07339280Enrolling by invitation
Probiotics for COPD: symptoms, lungs, and inflammation
This study tests whether taking a probiotic can improve symptoms, lung function, and inflammation in people with COPD. It is for adults with stable COPD who have not had a flare-up or treatment change in the last two months.
KarlovacAges 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 - NCT07337265Recruiting
Royal jelly for unexplained male infertility
This trial tests whether taking royal jelly supplements for 3 months can improve sperm quality and fertility in men with unexplained infertility. It might help if you and your partner have been trying for a baby for over a year without success, and all standard tests are normal.
Istanbul, BaşakşehirAges 18–45 - NCT06590623Recruiting
How a ketone supplement affects your immune cells
This study tests what happens to your immune cells when you take a single dose of a common ingredient (ketone supplement) after not eating overnight. Researchers want to see if it changes how your immune system works at a molecular level.
Kelowna, British ColumbiaAges 19 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+ - NCT06867861Recruiting
Can fiber supplements help manage gestational diabetes?
This study tests whether taking fiber supplements can help control blood sugar during pregnancy without needing medication. It is for women with gestational diabetes who currently do not require medication.
Norfolk, VirginiaAges 18–50 - 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+ - NCT06869486Recruiting
How insomnia affects DNA, heart health, and lifestyle
This study looks at how insomnia affects your DNA, heart health, metabolism, and daily habits. It includes different groups of people—healthy adults, athletes, older adults, university students, and people with metabolic syndrome—to compare the impact of sleep problems.
Ensenada, Estado de Baja CaliforniaAges 18–75 - 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+ - NCT06595719Recruiting
Probiotics plus standard care for mild to moderate UC
This trial tests whether adding a multi-strain probiotic supplement to your usual care can help manage mild to moderate ulcerative colitis (UC). It lasts 12 weeks and requires you to stay on your current medications without changes.
Cheras, Kuala LumpurAges 18–90 - NCT07314593Recruiting
Fish oil for preventing colds and respiratory infections
This trial tests whether taking fish oil with free fatty acids can help healthy adults avoid colds and other respiratory infections. If you are generally healthy and willing to take fish oil capsules daily, you may be able to join.
ReykjavikAges 18–80 - NCT07314411Recruiting
Carotenoids for Eye Health in Healthy Adults
This study tests if taking a carotenoid supplement (MacuHealth) can improve or protect retinal health in healthy adults. You might join if you have normal vision and no major eye or health problems.
Forest Grove, OregonAges 18–75 - NCT07310485Enrolling by invitation
Soy supplements for premenstrual syndrome in women approaching menopause
This study tests whether taking phytoestrogens (plant-based compounds that act like estrogen) can reduce premenstrual syndrome symptoms and affect gene expression in healthy women in their 40s and 50s. It may help women who are still having regular periods but are approaching menopause.
Amman, Amman GovernorateAges 40–55 - 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 - 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+ - NCT07299006Recruiting
Study of a robot to help manage pain during IV placement in children
This trial tests whether a friendly robot named Paro can help reduce pain and anxiety in young children when they need an IV placed. If your child is between 1 and 7 years old and needs an IV, this study may help make the procedure less stressful.
BrestAges 1–7 - 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 - NCT07295327Recruiting
Food supplements for mild high cholesterol
This trial tests whether two different food supplements can improve cholesterol levels in people with mild high cholesterol. It aims to find a safe and natural way to help manage cholesterol without medication.
Pavia, LombardyAges 35–70 - NCT07280520Enrolling by invitation
Luteolin supplement for athlete performance and metabolism
This study tests whether a daily luteolin supplement (a natural compound found in some plants) can improve how your muscles and fat cells use energy, boost your athletic performance, and change your body composition over 12 weeks.
Amman, Amman GovernorateAges 18–35 - NCT07285226Recruiting
Creatine for muscle loss in older adults
This trial tests whether taking creatine HCl can help older adults with muscle loss (sarcopenia) improve muscle strength. If you are over 60 and have weak grip strength, this study might be for you.
BelgradeAges 60 years+
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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.