Treatment
Vitamin A clinical trials
We’re tracking 274 recruiting studies that include Vitamin A, each written for real people, not researchers, below.
Recruiting studies
- NCT06012760Recruiting
Can iron and vitamin C reduce transfusions during heart surgery?
This trial is testing whether giving iron plus vitamin C before heart surgery can reduce the need for blood transfusions. It is for people with low iron and anemia who are scheduled for bypass or valve surgery.
Hangzhou, ZhejiangAges 18 years+ - NCT06018896RecruitingPhase 2
Vitamin C for late-stage pancreatic cancer quality of life
This trial is testing if high-dose vitamin C can improve quality of life for people with advanced pancreatic cancer that has continued to grow after two previous treatments. It aims to see if vitamin C can help patients feel better and possibly slow the cancer.
Shanghai, Shanghai MunicipalityAges 18–80 - NCT06081387Recruiting
Exercise and vitamin D for type 2 diabetes
This study tests whether adding aerobic and resistance exercise to your routine helps manage type 2 diabetes better when you already take metformin, an SGLT2 inhibitor, and possibly vitamin D. You would be assigned either to an exercise program or to continue your usual care.
BarcelonaAges 40 years+ - NCT06104007Recruiting
Genoss balloon for narrowed heart stents
This study follows patients who have already received a special drug-coated balloon (Genoss® DCB) to treat a re-narrowed heart stent. It aims to see how safe and effective the balloon is in the long term.
SeoulAges 19 years+ - NCT06133231Recruiting
ADHD research with Black and Hispanic families
This study tests if a new approach to ADHD research works well with diverse families. It involves taking supplements and collecting samples at home to see how the body responds.
Portland, OregonAges 6–17 - NCT06234501Recruiting
Does vitamin B6 help sensory issues in autism?
This trial tests whether taking a daily 100 mg vitamin B6 supplement can help with sensory reactivity in autistic adults. It involves taking either the vitamin or a placebo (fake pill) for a set period and reporting how your senses (like touch, sound, or light) feel.
ReadingAges 18–60 - NCT06267859RecruitingEarly Phase 1
New treatments for frequently ill children
This study tests new ways to help children who get sick often (frequently ill children) feel better and avoid common illnesses. It focuses on children who do not have severe chronic diseases.
Tashkent, Yunus-obad DistrictAges 3 days–15 years - NCT06285357Recruiting
Testing EGCG, folic acid, and vitamin B12 for HPV
This trial tests whether taking a combination of EGCG (a compound from green tea), folic acid, and vitamin B12 can help prevent an HPV infection from lasting or getting worse. You may be able to join if you have a high-risk HPV infection but not a more serious cervical cell change called HSIL.
Modena, ModenaAges 25–65 - NCT06321991RecruitingPhase 2
Shrinking palm lumps in Dupuytren disease
This study tests a treatment for people with Dupuytren disease who have a lump (nodule) in their palm but no finger bending yet. It aims to see if the lump can shrink and prevent the disease from getting worse.
Leuven, Vlaams-BrabantAges 18 years+ - NCT06323538Recruiting
Plant-based diets and health (COPLANT)
This study looks at how different plant-based diets affect your health. Researchers will collect information through questionnaires and blood samples to understand the benefits of eating more plants.
ViennaAges 18–69 - NCT06327581Recruiting
Microneedling with creams for patchy hair loss
This trial tests if microneedling with either lactic acid, vitamin D3, or a steroid cream helps regrow hair in people with patchy alopecia areata (small bald spots).
ZagazigAges 16 years+ - NCT06347315Recruiting
Studying a nutritional drink for mild memory loss in older adults
This study tests whether a special drink containing medium-chain triglycerides (MCTs, a type of fat) and B vitamins can help support memory and thinking in older adults with mild cognitive impairment (MCI). You would take the drink daily for 18 months and have regular check-ins including memory tests.
BronAges 60 years+ - NCT06379997Recruiting
Oral supplement vs. shoulder injection for rotator cuff pain
This trial compares taking an oral supplement versus getting hyaluronic acid injections for ongoing shoulder pain due to a partial rotator cuff tear. It aims to see which treatment works better for improving movement and reducing pain without surgery.
Roma, RMAges 30–80 - NCT06402851RecruitingPhase 4
Blood thinner or none for atrial fibrillation with dialysis
This trial compares two types of blood thinners (vitamin K antagonists and factor Xa inhibitors) versus no blood thinner in people with atrial fibrillation who are on dialysis or have very advanced kidney disease. It aims to see which option is safest and most effective for preventing strokes and bleeds.
Salvador, Estado de BahiaAges 18 years+ - NCT06568185RecruitingPhase 2
Alpha lipoic acid and vitamin B for diabetic nerve damage
This trial tests whether a combination of alpha lipoic acid (a natural antioxidant) and vitamin B supplements can help relieve nerve pain, numbness, or tingling caused by diabetes. It is for people with type 2 diabetes who have diabetic nerve damage.
Kubang Kerian, KelantanAges 18 years+ - NCT06570889RecruitingPhase 3
Vitamin D in pregnancy to prevent early childhood asthma
This trial tests if taking extra vitamin D during pregnancy can prevent asthma in young children. It is for pregnant women in Denmark who already have certain healthy fat levels in their blood.
Gentofte MunicipalityAges 18–45 - NCT06571721Recruiting
Almond oil vs. tretinoin for face wrinkles in certain women
This study compares a topical almond oil cream to tretinoin to see which reduces facial wrinkles better. It is for post-menopausal women with light to medium skin tones who have fine lines and wrinkles.
Sacramento, CaliforniaAges 18 years+ - NCT06598033RecruitingPhase 2/Phase 3
Vitamin C and Cordyceps for quality of life in advanced pancreatic cancer
This trial tests whether a combination of high-dose vitamin C and cordyceps (a type of fungus used in traditional medicine) can improve quality of life for people with late-stage pancreatic cancer that has progressed after two prior treatments. It looks at how these supplements affect your well-being and daily living.
ShanghaiAges 18–80 - NCT06601283RecruitingPhase 2/Phase 3
Vitamin C and Cordyceps for Anemia in Pancreatic Cancer
This trial tests whether adding vitamin C and a fungus called cordyceps to standard chemotherapy can help improve anemia (low red blood cells) in people with advanced pancreatic cancer. It's for those who have not yet had treatment for their cancer.
ShanghaiAges 18–80 - NCT06748989Recruiting
Dietary supplement for memory and focus in postmenopausal women
This study tests whether a dietary supplement containing PQQ, GABA, caffeine, and B vitamins can improve thinking and memory in healthy women after menopause. Participation involves taking the supplement for a period and completing simple cognitive tests.
Debrecen, HBAges 18 years+ - NCT06759493Recruiting
Testing a simpler method to measure vitamin A in children
This study tests a simpler way to measure vitamin A levels in schoolchildren in Burkina Faso. It may help improve nutrition assessments for kids.
Bobo-Dioulasso, Bobo-Dioulasso, Houet, Région Des hauts-BassinsAges 7–12 - NCT06765265RecruitingPhase 4
Comparing two statins' effect on vitamin D after heart attack
This study compares two common statins (atorvastatin and rosuvastatin) to see how they affect vitamin D levels in people who have recently had a heart attack or unstable angina. It may help doctors choose the best statin for your heart and vitamin D health.
Lahore, Punjab ProvinceAges 18–65 - NCT06830187Recruiting
Bone density, vitamin D, and hearing loss in otosclerosis
This study looks at how bone density and vitamin D levels relate to hearing loss in people with otosclerosis, a condition where extra bone growth in the ear causes hearing problems. It may help doctors understand why some people lose more hearing than others.
AnkaraAges 18 years+ - NCT06864156Recruiting
Molecules and vitamin levels in long COVID with brain fog
This study looks at certain molecules (called microRNAs) and vitamin B12 levels in people who have ongoing brain-related symptoms like depression, anxiety, or fatigue after a COVID-19 infection. It may help understand why some people have long-lasting symptoms and could lead to better treatments.
Mexico City, Mexico CityAges 18–65
Common questions
- Are there clinical trials studying Vitamin A?
- Yes. Clin2 currently lists 274 recruiting studies that include Vitamin A, drawn from the U.S. registry and rewritten for real people so you can see what each is testing and who it's for.
- How do I know if I qualify for a Vitamin A trial?
- Each study lists its own eligibility criteria — rules about condition, age, and prior treatments. On every Clin2 trial page we explain these in plain language and offer a short, optional pre-screen for a fit read. The study team makes the final decision.
- Is Vitamin A an approved treatment?
- A drug being studied in a trial may be investigational (still being tested) or already approved and being studied for a new use. Each study page explains what phase it's in. Clin2 does not provide medical advice — talk with your doctor about whether Vitamin A or a specific trial is right for you.
Related treatments
Clin2 helps you find and understand clinical trials and does not provide medical advice. Study data comes from ClinicalTrials.gov. A drug appearing here is being studied in a trial and may be investigational. Talk with your doctor about whether a specific treatment or trial is right for you.