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
- NCT07675421Recruiting
HMB supplement for head and neck cancer surgery
This trial tests whether taking HMB (a supplement that may help reduce inflammation) can improve recovery and outcomes in people with head and neck cancer who are scheduled for surgery to remove their tumor.
Belo Horizonte, Minas GeraisAges 18 years+ - NCT07665658Recruiting
Supplements for ADHD: Calming brain inflammation in kids
This study tests whether special supplements can help calm inflammation in the brain and improve ADHD symptoms in children. It might be a good fit if your child's ADHD is diagnosed and they are not taking antibiotics or have other health issues like gut problems or severe allergies.
Peshawar, KPKAges 6–12 - 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 - NCT07666685Recruiting
Beetroot Extract for Health in Adults 75+
This study looks at whether taking beetroot extract can help improve quality of life and daily function in adults 75 and older. You will be asked to take the extract and complete simple health questionnaires.
Pamplona, NavarreAges 75 years+ - NCT07668596Recruiting
Broccoli sprout supplement and exercise in healthy adults
This trial studies how a natural compound from broccoli sprouts (sulforaphane) and exercise, alone or together, affect your body's immune and metabolic health. It's for healthy, active adults aged 19–35.
Kelowna, British ColumbiaAges 19–35 - NCT06510348Recruiting
Feeding support for ventilated patients with gut issues
This trial tests a special approach to nutrition for patients on breathing machines who have trouble digesting food. It aims to see if the new method helps meet nutritional needs better.
BucharestAges 18 years+ - NCT07662330Recruiting
Spermidine for weight and cholesterol in overweight adults
This trial tests if a natural supplement called spermidine can help lower cholesterol and body weight in overweight people with high cholesterol. You cannot be on any cholesterol or diabetes medications.
Shanghai, Shanghai MunicipalityAges 18–60 - NCT07662954Enrolling by invitation
Magnesium and Spinning for Heart Health in Young Men
This study tests whether adding magnesium to regular spinning (indoor cycling) exercise improves heart function, reduces inflammation, and boosts aerobic (cardio) fitness in young, active men.
KaramanAges 18–30 - NCT06671665Recruiting
Manual therapy for low back pain in women with osteopenia
This study tests if manual therapy (hands-on treatment by a therapist) can reduce low back pain in postmenopausal women who have osteopenia, a condition where bones are weaker than normal but not yet osteoporosis. It aims to help with pain located in the lower back area.
GizaAges 50–60 - NCT07654777Recruiting
Vitamin D for better performance in healthy adults
This study tests if taking vitamin D supplements can help young, healthy adults stay sharp and perform well under stress. You may be eligible if your current vitamin D level is low but not severely low.
Silver Spring, MarylandAges 18–40 - NCT07648706Recruiting
Vitamin D supplements to prevent pregnancy complications
This study tests whether vitamin D supplements can help prevent preeclampsia (a serious pregnancy condition with high blood pressure) in women with low vitamin D levels. You would take vitamin D pills during pregnancy and be monitored to see if this reduces your risk.
Sanaa, Maeen DistrictAges 18–40 - NCT07651709Recruiting
Bone Health During Pregnancy in Women With Epilepsy
This study looks at how epilepsy and epilepsy medications affect bone health during pregnancy and after delivery. Researchers want to understand how to keep bones strong while you're pregnant and taking seizure medications, which can sometimes weaken bones.
ZhejiangAges 18 years+ - NCT07643558Recruiting
Fish oil and weight training for cancer patients' muscle health
This study tests whether taking fish oil supplements combined with progressive weight training exercises can help preserve or build muscle strength in cancer patients undergoing treatment. The goal is to help you maintain physical function and quality of life during cancer care.
Erlangen, BavariaAges 18 years+ - NCT07645898Recruiting
Glucose monitoring study of cornstarch in glycogen storage disease
This study uses a glucose monitor (a small sensor you wear) to measure how your blood sugar responds after eating raw cornstarch, a common treatment for glycogen storage disease type I. The goal is to understand how well cornstarch helps keep your blood sugar steady.
Naples, NapoliAges 18 years+ - NCT07641075Recruiting
High-Dose Vitamin D Effects in Experienced Athletes
This study tests whether high-dose vitamin D supplements improve athletic performance, brain function, and body composition in experienced athletes. Researchers will measure hormones, muscle strength, thinking ability, and muscle mass over time.
Katowice, Mikołowska 72aAges 17–60 - NCT07636733Recruiting
Vitamin D for Gum and Bone Health in Periodontal Disease
This study tests whether vitamin D supplements can reduce inflammation and improve healing in people with gum disease, ranging from mild gingivitis to advanced periodontitis. Researchers will compare how vitamin D affects different stages of gum disease.
RizeAges 18–70 - NCT04926597Recruiting
Extra nutrition after hospital discharge for higher-risk patients
This study looks at whether continuing nutritional support after you leave the hospital can reduce death risk and help you recover better—like improving strength, frailty, and daily functioning. It targets people who are at higher risk of poor nutrition during/after their hospital stay.
BarcelonaAges 18 years+ - NCT07605728RecruitingPhase 2
Probiotics to ease stomach problems from breast cancer treatment
This trial tests whether a special probiotic supplement (good bacteria) can reduce belly discomfort caused by abemaciclib, a hormone therapy drug for early breast cancer. You would take the supplement alongside your cancer treatment to see if it helps with stomach side effects.
TaipeiAges 18 years+ - NCT07611916Enrolling by invitation
App-based support for group therapy in the hospital
This study tests if adding a smartphone app to group therapy helps people in the hospital feel better. It is for adults who can speak English and have a smartphone.
Piscataway, New JerseyAges 18 years+ - NCT07606872Enrolling by invitation
Testing a diabetes score to guide treatment reversal
This study tests a new scoring system to help people with type 2 diabetes understand their condition better and potentially reverse or improve it. You'll use a digital platform to track blood sugar, answer health questions, and have blood tests to see if the system helps guide your treatment plan.
Manchester, EnglandAges 18 years+ - NCT07609329Recruiting
Nutritional Support Before Sarcoma Surgery
This study tests whether special nutritional supplements given before surgery for bone or soft tissue sarcoma (a type of cancer) can help your body heal better and recover faster. You'll take oral supplements for at least a week before your planned surgery.
BrnoAges Any age - NCT07597005Recruiting
Red Propolis Supplement for Kidney Disease Management
This study tests whether red propolis, a natural bee product, might help slow kidney disease progression in people with moderate to advanced chronic kidney disease who aren't yet on dialysis. Researchers believe its anti-inflammatory properties could support kidney health.
Rio de Janeiro, Rio de JaneiroAges 18–65 - NCT07596966Recruiting
Propolis and Royal Jelly for High Blood Pressure
This study tests whether two bee products—propolis and royal jelly—can help reduce inflammation and stress in the body of people with high blood pressure. Researchers want to see if adding these supplements to your current blood pressure medication helps control the condition better.
Niterói, Rio de JaneiroAges 18–75 - NCT07591012Recruiting
Probiotic Supplements for Ulcerative Colitis Remission
This trial tests whether taking sodium butyrate (a short-chain fatty acid) and a specific probiotic yeast called Kluyveromyces marxianus can help keep ulcerative colitis in remission and prevent flare-ups. You'd need to be in remission (symptom-free with no active inflammation) when you start.
PadovaAges 18–75
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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.