Clinical trials
Supplementation clinical trials
Below are recruiting supplementation clinical trials, each written for real people, not researchers. We’re tracking 697 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT07383974Recruiting
12-week study: how diet affects skin and health
This trial tests whether eating more fruits and vegetables for 12 weeks can improve your skin and how you feel physically. It uses a special light scanner to measure skin health.
Shanghai, Shanghai MunicipalityAges 18 years+ - NCT07355634Recruiting
Terraflora daily care for gut health
This trial tests if a daily probiotic supplement, Terraflora, can improve gut health in people with an imbalance of gut bacteria (dysbiosis). You may join if you're an adult with a stool test showing dysbiosis and are not taking certain other medications or supplements.
Richmond, VirginiaAges 25 years+ - NCT06546189Recruiting
Probiotics for overactive bladder treatment
This study tests whether a daily probiotic supplement (Lactobacillus) can help reduce overactive bladder symptoms. It compares the supplement to a placebo in a randomized trial.
ViennaAges 18 years+ - NCT06971224RecruitingPhase 2
Can a vitamin B3 supplement improve sleep?
This study tests whether a daily supplement called nicotinamide riboside (a form of vitamin B3) can improve sleep quality in healthy adults. If you are between 40 and 60 years old, have normal sleep, and are not taking sleep aids, you may be able to join.
BergenAges 40–60 - NCT07592013Enrolling by invitation
Ancestry Supplements for Fatty Liver Disease
This study tests whether a special supplement (made from cacao, nopal, and crickets) can help improve fatty liver disease in people with excess body fat. Fatty liver disease happens when fat builds up in the liver, and this trial investigates whether these natural ingredients can reduce that buildup.
Guadalajara, GuadalajaraAges 18–60 - NCT06531863RecruitingEarly Phase 1
Curcumin and green tea supplement for mood improvement
This study tests whether taking curcumin (found in turmeric) and EGCG (found in green tea) can improve mood and increase a brain protein called BDNF, which may help with depression. It is for adults ages 18 to 50 with mild to moderate depression symptoms.
Auburn, AlabamaAges 18–50 - 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+ - 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 - NCT06847139Recruiting
Zinc vs. folic acid for high homocysteine in kidney dialysis
This trial tests whether zinc supplements can lower high homocysteine levels better than folic acid in people with chronic kidney disease who are on hemodialysis. It aims to find a simple, safe way to help protect your heart and blood vessels.
ChittagongAges Any age - NCT06546774Recruiting
Melatonin for better IVF results in women 35-45
This study tests whether taking melatonin (a natural sleep hormone) as a supplement can improve the health of cells surrounding your eggs (cumulus cells) and possibly lead to more successful IVF. It is for women aged 35 to 45 planning an IVF cycle.
Kaohsiung CityAges 35–45 - NCT07141888Recruiting
Probiotic supplement for high uric acid
This study tests whether a probiotic food supplement can lower high uric acid levels, which often cause gout. It might help you if your uric acid is high but you haven't had a recent gout attack.
ÖrebroAges 18–80 - NCT07119788Recruiting
Haskap berry supplement for cognitive health
This study tests whether a supplement made from haskap berries can help improve cognitive health in older adults. If you are 50 or older, eat few fruits and vegetables, and are generally healthy, you may be able to join.
ReadingAges 50 years+ - NCT06045351RecruitingPhase 1
Vitamin D shots for women with PCOS and low vitamin D
This trial tests whether vitamin D injections can help females with polycystic ovary syndrome (PCOS) who also have low vitamin D levels. Participants will receive the injection and be monitored for changes in their condition.
Karachi, SindhAges 18–45 - NCT07033013Recruiting
Study of an oral supplement for menopause hot flashes
This study tests an oral product to see if it can help with menopause symptoms like hot flashes. It is for women aged 40–65 who still have a uterus and are not on hormone therapy.
San Francisco, CaliforniaAges 40–65 - NCT07012161RecruitingEarly Phase 1
Vitamin D for fibroid symptoms in women with low vitamin D
This trial tests whether taking vitamin D3 can help reduce symptoms like heavy bleeding or pressure from uterine fibroids. It is for women who have fibroids and are also low in vitamin D.
Dhaka, SahabagAges 18–50 - 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+ - NCT06982703Enrolling by invitation
Butyrate for antibiotic-related diarrhea
This trial tests if a supplement called butyrate can prevent or reduce diarrhea caused by antibiotics. If you're starting antibiotics, you may be able to join.
PadovaAges 18–80 - NCT06925880Recruiting
Can creatine help seniors recover strength after knee replacement?
This trial tests if taking creatine supplements can help people aged 65+ rebuild muscle mass and strength more quickly after total knee replacement surgery. Participants will take creatine during their standard outpatient rehab program.
Mataró, BarcelonaAges 65 years+ - 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 - NCT07142759Enrolling by invitation
Vitamin D tomato soup trial for low vitamin D levels
This study tests whether a specially grown tomato soup (with extra vitamin D) can raise your vitamin D levels over 3 weeks. You'll eat one soup packet each day. It's for people who have low but not severely low vitamin D.
NorwichAges 18 years+ - NCT06776640Recruiting
Vitamin D3 before dental implant surgery for better bone bonding
This trial tests whether taking vitamin D3 pills before and after dental implant surgery helps the implant bond better with the bone. It is for people who have low vitamin D levels and are already scheduled for an implant.
Nantes, NantesAges 18 years+ - NCT07432490RecruitingPhase 2
Fucose supplement trial for GLUT1 deficiency
This trial tests whether taking fucose (a type of sugar) can help people with GLUT1 deficiency syndrome, a rare genetic condition that affects how the brain gets energy. If you have ataxia (trouble with balance or coordination) and meet other criteria, this study may be an option for you.
Portland, OregonAges 18 years+ - NCT06695429Recruiting
Beetroot juice to prevent kidney damage from contrast dye
This trial tests if drinking beetroot juice can help protect your kidneys from damage caused by the dye used during heart procedures. It is for people hospitalized with a certain type of heart attack who are at moderate to high risk of kidney problems.
CartagenaAges 18 years+ - NCT06689761Enrolling by invitation
Collagen peptides and exercise: muscle strength study
This trial tests whether taking collagen peptides before exercise can improve how your muscles adapt to strength training. It could help you build muscle more effectively.
Vienna, State of ViennaAges 18–40
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Common questions
- Are there clinical trials for supplementation?
- Yes. Clin2 currently lists 697 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.