Clinical trials
Supplementation clinical trials
Below are recruiting supplementation clinical trials, each written for real people, not researchers. We’re tracking 692 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT07529249Recruiting
Oral Collagen Peptides for Skin Barrier Function in Women
This study tests whether taking collagen peptides by mouth can improve dry skin and strengthen the skin barrier in women ages 45–70. Researchers will measure changes in skin moisture and texture over time.
NiceAges 45–70 - NCT07685431Recruiting
Alpha-lipoic acid for IVF in women 35-45
This trial tests whether taking alpha-lipoic acid (an antioxidant supplement) before and during IVF can improve pregnancy success in women aged 35–45 using their own eggs. It aims to see if the supplement can help counter age-related declines in egg quality.
Kaohsiung CityAges 35–45 - NCT06379971RecruitingPhase 1
Choline for cannabis use in pregnancy
This trial tests whether taking choline (a vitamin-like nutrient) during pregnancy can help protect the baby's brain development in women who use cannabis. It aims to understand if choline supplementation can reduce potential risks linked to cannabis use.
Aurora, ColoradoAges 18–45 - NCT07063732Recruiting
Ketone drink, high altitude, and brain blood flow during exercise
This trial tests whether a ketone monoester supplement affects brain blood flow and exercise performance at high altitude. It may help us understand how to support brain function during altitude exposure.
Bishop, CaliforniaAges 18–35 - NCT07580118Recruiting
Postbiotic Supplement Study for Female Athletes
This study tests whether a postbiotic supplement (a type of gut health product) can reduce digestive problems that female athletes experience during exercise and their menstrual cycle. You'll take the supplement for several months while tracking your symptoms and training.
Liverpool, MerseysideAges 18 years+ - NCT07082673Recruiting
Sea buckthorn supplement for chronic constipation
This study tests a food supplement made from sea buckthorn to see if it helps people with chronic constipation have more regular and comfortable bowel movements.
NaplesAges 18–70 - NCT07090876Recruiting
Grape seed extract for blood pressure
This trial tests whether a grape seed extract supplement can help people with slightly high blood pressure (called high-normal) improve their heart health. It may be an option if your blood pressure is borderline and you are not taking blood pressure medications.
Bologna, BoAges 18–70 - NCT07555093Recruiting
Micronutrient Supplements and Digital Health Tracking in Pregnancy
This study tests whether taking micronutrient supplements (vitamins and minerals) along with a digital app or text reminders helps pregnant women stay on track with their prenatal care. The goal is to improve nutrition and health outcomes during pregnancy.
Mataram, West Nusa TenggaraAges 14 years+ - NCT07715201Recruiting
Amino acid drink for strength and recovery in active men
This study tests whether a special amino acid supplement helps trained men get stronger, perform better, and recover faster from workouts. You'll take the supplement daily and follow a 10-week supervised training program.
Toronto, OntarioAges 18–45 - NCT06696378Recruiting
Melatonin, exercise, and breast cancer wellness study
This study tests if taking melatonin and doing a supervised exercise program together can improve health and well-being in women who had breast cancer 5 or more years ago and have gone through menopause. It aims to find a safe, natural way to feel better after treatment.
Soria, SoriaAges 60–80 - NCT06936202Recruiting
Spirulina pill study for healthy adults
This study tests whether a supplement called spirulina (a type of algae) can improve mental health in healthy adults. You would take spirulina daily and have your mood and well-being checked over several weeks.
Phoenix, ArizonaAges 16–65 - NCT07159919Recruiting
Insect vs animal protein for building muscle
This trial compares protein from insects to protein from animals to see which helps build muscle better. If you are a regular weightlifter and open to taking a protein supplement daily for 12 weeks, this study may help you understand more about your muscle health.
Guildford, SurreyAges 18 years+ - NCT06677359Recruiting
Creatine and exercise for older adults
This study tests whether a creatine supplement, taken with or without a gentle exercise program, can help older adults stay stronger and more independent. It's designed for people aged 75 and older who can still walk.
Pamplona, NavarreAges 75 years+ - NCT07587905Recruiting
How calamansi fruit affects blood sugar in healthy adults
This study tests whether drinking or eating calamansi (a small citrus fruit) can help keep blood sugar levels healthy. Researchers will measure how it affects glucose and insulin in people without diabetes.
Mueang, Burapha UniversityAges 18–30 - NCT07583186Recruiting
How Eating More Eggs During Pregnancy Affects Baby's Brain Development
This study looks at whether pregnant women who eat more eggs can help their babies' brain development. Researchers will follow you and your baby from pregnancy through the first year of life to see if increased egg consumption makes a difference.
Kansas City, KansasAges 18 years+ - NCT06683599Recruiting
Oxygen via nasal tube for babies during breathing tube placement
This study tests whether giving extra oxygen through a small tube in the nose during placement of a breathing tube helps young children stay safer. It is for newborns and infants up to about 1 year old who need a breathing tube for surgery or other non-emergency procedures.
Perth, Western AustraliaAges 1 minute–12 months - NCT07067697Recruiting
Exercise and nutrition for older adults in the hospital
This study tests whether a supervised exercise program, combined with oral nutritional supplements, helps hospitalized older adults who are malnourished or at risk. It aims to improve strength and recovery during their hospital stay.
Pamplona, NavarreAges 75 years+ - NCT06970925RecruitingEarly Phase 1
Iron supplement after heart surgery study
This trial tests whether a special iron supplement (Sucrosomial® Iron) helps patients recover from heart surgery better than standard care. It is for people who have low iron or anemia after their planned heart surgery.
Englewood, New JerseyAges 18 years+ - NCT07711990Recruiting
Studying ketone supplements and brain health
This trial tests how a ketone drink affects the brain in healthy middle-aged adults. It may help researchers understand if ketones can support brain function.
Columbus, OhioAges 45–65 - NCT07699393RecruitingPhase 2
Choline supplement study for healthy pregnancies
This trial tests whether taking extra choline (a nutrient similar to B vitamins) during pregnancy can improve health for mothers and babies. You may be eligible if you are early in a singleton pregnancy and do not drink alcohol.
Cape TownAges 18–45 - NCT07484061Recruiting
Drinkable supplement for hair loss in women on weight-loss drugs
This trial tests if a special drinkable supplement can help prevent or reduce hair loss in women who are taking a GLP-1 or GIP receptor agonist (a type of weight-loss or diabetes medication). The study looks for women who have just started this medication or have been on it for less than 3 months.
Madrid, MadridAges 35 years+ - NCT07667205Enrolling by invitationPhase 1
Liposomal vs. ferrous iron for preventing anemia in preterm babies
This trial compares two types of iron supplements—liposomal iron and ferrous iron—to see which works better at preventing iron deficiency anemia in premature infants. It aims to find a safer or more effective option for these fragile newborns.
CairoAges 2 weeks–3 weeks - NCT07024238Enrolling by invitation
Short-chain fatty acid supplement for kidney transplant patients
This study tests whether taking a short-chain fatty acid (a type of fiber-like substance) supplement can improve gut health in people who have had a kidney transplant. It may help keep the transplant working well.
Martin, SlovakiaAges 18 years+ - NCT07511088Recruiting
Study of a supplement for mild stress in healthy adults
This study tests a dietary supplement for people who experience mild stress or anxiety at least once a week. You will fill out surveys on your phone or computer to see if the supplement helps you feel calmer.
San Francisco, CaliforniaAges 18–60
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Common questions
- Are there clinical trials for supplementation?
- Yes. Clin2 currently lists 692 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.