Treatment
Vitamin A clinical trials
We’re tracking 254 recruiting studies that include Vitamin A, each written for real people, not researchers, below.
Recruiting studies
- NCT06758778Enrolling by invitation
How the body processes fish oil and other supplements
This study compares how healthy adults absorb fish oil (CreNeuroS CNS Fish Oil Plus) with two approved medicines (Vascepa and Deplin). It helps researchers understand if the new product works similarly in the body.
Hyderabad, TelanganaAges 18–45 - NCT06707909RecruitingPhase 4
Vitamin K2 gel for bone healing after tooth extraction
This study tests if applying a vitamin K2 gel directly into the tooth socket after extraction can help rebuild healthy bone faster. It is for people who need to have a single-rooted lower tooth removed.
Cairo, Cairo GovernorateAges 18–80 - NCT05045066RecruitingEarly Phase 1
Vitamin D treatment study for Black men with prostate cancer
This early-phase study looks at how vitamin D replacement affects the immune system in Black/African American men with prostate cancer. It’s testing whether bringing vitamin D levels into a healthier range changes immune signals that may matter for cancer health.
Scottsdale, ArizonaAges 18 years+ - 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 - 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 - 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 - 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+ - 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+ - NCT06410443Recruiting
Steroid treatment for radiation-induced bowel injury
This trial tests if local steroids can help heal bowel damage caused by radiation therapy for cancer. It may reduce pain, bleeding, and urgency, and improve quality of life.
Shenyang, LiaoningAges 18 years+ - 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+ - NCT06373848Enrolling by invitation
Vitamin E and Coenzyme Q10 for early gum disease
This study tests whether adding vitamin E and coenzyme Q10 to standard gum treatment can help heal early-stage chronic gum disease. It is for otherwise healthy adults aged 28-35 with mild gum pockets on their lower molars.
TehranAges 28–40 - NCT07658989Recruiting
Blood thinners in pregnancy with mechanical heart valves
This study looks at the best way to manage blood thinners for pregnant people who have mechanical heart valves. It aims to find the safest approach for both the mother and the baby.
Toronto, OntarioAges 18–45 - 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+ - 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 - 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 - NCT06267859Enrolling by invitationEarly Phase 1
Better treatment for common childhood illnesses
This study aims to improve treatment for children with common illnesses like bronchitis and for those who get sick often, to help them recover faster and stay healthier.
Tashkent, Yunus-obad DistrictAges 3 days–15 years - 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 - 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 - 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+ - NCT06087783Recruiting
Nutrition supplement study for gynecologic cancer patients on chemo
This study tests whether a special protein, leucine, and vitamin D drink can help women with gynecologic cancer stay stronger during platinum-based chemotherapy. If you're starting your first chemo cycle and can do most daily activities, you may be eligible.
Pavia, ItalyAges 18 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+ - NCT05951075Recruiting
Power prenatal vitamins study for men with specific sperm results
This study looks at whether a specific “power” prenatal vitamin helps improve sperm measures in men whose at-home sperm test results fall in a certain range. It’s mainly for men living in the US or Canada who aren’t taking other prenatal vitamins already and don’t have known causes of male infertility.
Encino, CaliforniaAges 18–50 - NCT05913180RecruitingPhase 2
Vitamin C to prevent urine infections after gynecologic surgery
This Phase 2 study tests whether taking vitamin C can lower the chance of getting a urinary tract infection (UTI) after planned gynecologic surgery. It may help people who want to reduce post-surgery infection risk.
MoscowAges 18–80 - NCT05787808Recruiting
Preventive treatment for people with early bone loss
This trial studies a preventive treatment for people over 55 who have early bone thinning (called osteopenia). If you qualify, it may help reduce the risk of getting osteoporosis and related fractures.
Skjetten, AkershusAges 55–85
Common questions
- Are there clinical trials studying Vitamin A?
- Yes. Clin2 currently lists 254 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.