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
- NCT05702398RecruitingEarly Phase 1
Vitamin A and niacinamide for high-risk skin cancer
This early trial tests whether adding vitamin A and niacinamide (a form of vitamin B3) can help people with a history of certain skin cancers reduce new disease. It is designed for adults with specific prior skin cancer or skin lesion treatment patterns.
Providence, Rhode IslandAges 18 years+ - NCT05646394Recruiting
Registry for blood-clot prevention plans in arterial antiphospholipid syndrome
This study keeps a registry to follow people with antiphospholipid syndrome (APS) who have had arterial blood clots (like stroke). It collects information about the treatment approach your clinician chooses to see how different antithrombotic regimens may perform and be tolerated.
Buenos Aires, Buenos Aires F.D.Ages 18 years+ - NCT05555576Recruiting
Vitamin C to reduce opioid use after an ER visit
This trial tests whether taking vitamin C after an emergency room visit for a new, short-term muscle or joint pain can lower how many opioid pain pills you use. It may help by reducing opioid consumption while you recover.
Montreal, QuebecAges 18 years+ - NCT04258488RecruitingPhase 4
Blood thinner pill vs warfarin after mechanical aortic valve
This study compares a blood thinner pill (a factor Xa inhibitor) with warfarin (vitamin K antagonist) in people who have had a mechanical aortic valve replacement. It looks at which option works better and is safer over the long term.
Bucheon-siAges 19 years+ - NCT04150042RecruitingPhase 1
Test of chemotherapy plus your own stem cells for metastatic cancer
This Phase 1 trial tests a treatment approach using standard chemotherapy along with stem cells taken from you to treat metastatic pancreatic or breast cancer. It is mainly designed to check safety and find the best way to give the treatment, and it may offer an option for people whose cancer has spread.
Boston, MassachusettsAges 18 years+ - NCT02966665RecruitingPhase 1
Testing blood vessel function in people of different health conditions
This early study measures how well your blood vessels work using tests that may include MRI. It compares healthy people with people who have conditions like COPD, pulmonary arterial hypertension, heart failure, or high blood pressure, to better understand “vascular function” in health and disease.
Salt Lake City, UtahAges 18 years+ - NCT02172651RecruitingEarly Phase 1
Vitamin D during early colon cancer or liver surgery
This trial studies whether taking higher-dose vitamin D3 around the time of colon cancer (or colon cancer with resectable liver metastases) surgery improves outcomes. It focuses on safety and possible effects on cancer-related health after surgery.
Boston, MassachusettsAges 18 years+ - NCT05283174Recruiting
Blood thinner use during stroke to predict outcomes
This study looks at how people doing well on certain blood thinners do when they have a stroke or bleeding while taking them. It will measure medication levels in your blood to understand stroke severity and recovery in the short and long term.
TaipeiAges 20 years+ - NCT05005897RecruitingPhase 2/Phase 3
Micronutrient supplements for early infant growth and development
This study tests whether early infant nutrition using specific micronutrients (small amounts of key vitamins and nutrients) can support healthy growth and development. It includes babies whose moms plan to breastfeed for long enough, and it excludes infants with serious health problems.
LillehammerAges 1 month–2 months - 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+ - NCT07863232Recruiting
Melatonin and nutrition for fibromyalgia pain relief
This study tests whether taking melatonin, a sleep and pain hormone, along with special nutrition supplements, can help reduce fibromyalgia pain. It may offer a new way to manage symptoms.
LarissaAges 18 years+ - NCT05670262Recruiting
Study vitamin D and gut bacteria in childhood allergies
This study looks at how gut bacteria (microbiome) and vitamin D levels in newborns may influence whether children develop allergies. It starts with newborn babies and aims to better understand what early factors could predict allergic diseases.
TaichungAges birth–1 year - NCT07873372Enrolling by invitation
Kidney protection with vitamin C and rutin during vancomycin treatment
This trial tests whether taking vitamin C and rutin (a plant compound) together can help protect the kidneys from damage caused by the antibiotic vancomycin. It compares this combination to vitamin C alone and to no extra supplement.
Cairo, Cairo GovernorateAges 18 years+ - NCT03999723RecruitingPhase 2
Test azacitidine with vitamin C to improve DNA changes
This Phase 2 study tests whether combining azacitidine (a standard blood cancer medicine) with vitamin C helps improve disease control by changing DNA activity in high-risk blood cancers. It may be an option if you have certain types of higher-risk MDS, CMML, or low-blast AML and can meet safety requirements.
AalborgAges 18 years+ - NCT07842120RecruitingPhase 2
Can certain medications speed up tooth movement with braces?
This study tests three different treatments (MOP, prostaglandin E1, and calcitriol) to see if they can make teeth move faster during orthodontic treatment. If you're getting braces for moderate crowding, this could reduce your treatment time.
Baghdad, Baghdad GovernorateAges 18–25 - NCT07813975Recruiting
Vitamin D for healing bed sores in intensive care
This trial tests whether giving vitamin D supplements through a feeding tube can help heal bed sores (pressure injuries) in intensive care patients. It is for patients who have low vitamin D and early-stage bed sores, and who are otherwise stable enough to participate.
CairoAges 18–60 - NCT07763977Enrolling by invitation
Vitamin D and iron study for obsessive-compulsive disorder
This study tests whether vitamin D and iron levels affect brain function linked to self-control in people with OCD. It may help find new ways to improve treatment.
Guangzhou, GuangdongAges 14–45 - NCT07750379Recruiting
Acid-reducing medicine for aspiration in children with laryngomalacia
This study tests whether giving a common acid-reducing medicine (a proton pump inhibitor) to children with laryngomalacia can reduce choking and aspiration. It may help if your child has frequent choking episodes.
Minya, Minya GovernorateAges 6 months–5 years - NCT07715669RecruitingEarly Phase 1
Antidepressants to improve blood vessel health after preeclampsia
This study looks at whether antidepressant medication can help improve blood vessel health in women who have had preeclampsia or a normal pregnancy. It may help lower future heart risks.
Iowa City, IowaAges 18–45 - NCT04516681RecruitingPhase 3
Ascorbic acid plus immunotherapy for spread colorectal cancer
This trial tests whether intravenous vitamin C (ascorbic acid) combined with an immune treatment (adebrelimab) can slow or shrink metastatic colorectal cancer that can’t be removed with surgery. It focuses on tumors that strongly show a specific marker called GLUT3, and aims to see if the combination works better than standard approaches.
Shanhai, Shanghai MunicipalityAges 18–75 - NCT07665723RecruitingPhase 1
Study of afimkibart and other medicines in ulcerative colitis
This study looks at how afimkibart affects the way your body processes certain other medicines. It is for people with moderate to severe ulcerative colitis and helps researchers understand how to use this treatment safely.
Chula Vista, CaliforniaAges 18–60 - 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 - 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+ - 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
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.