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
- 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 - NCT07605676RecruitingPhase 4
Acupuncture stimulation versus strength training for anemia from heavy periods
This study tests whether acupuncture-based electrical stimulation or resistance (strength) training can help women with moderate iron-deficiency anemia caused by heavy menstrual bleeding. Both treatments aim to improve energy levels and blood counts alongside standard medical care.
CairoAges 20–30 - NCT07585045Recruiting
Magnesium Supplements for Fibromyalgia Not Helped by Standard Drugs
This study tests whether taking magnesium by mouth can reduce fibromyalgia pain in people whose symptoms don't improve with common medications like amitriptyline, duloxetine, or pregabalin. Magnesium is a mineral that may help relax muscles and ease pain.
Lahore, Punjab ProvinceAges 18–65 - NCT05589064Recruiting
Diet and nutrition program for lingering concussion symptoms
This study tests whether a dietary and nutrition intervention can improve symptoms that linger after a concussion. It may help people whose post-concussion symptoms have lasted a short to medium time (at least 2 weeks).
Moncton, New BrunswickAges 16 years+ - NCT07534852Recruiting
Nutrition and exercise support for colon cancer surgery patients
This study tests whether nutrition support and exercise help patients with early-stage colon cancer recover better after surgery. Researchers will provide dietary guidance and a supervised exercise program tailored to your needs.
Málaga, MalagaAges 18–75 - NCT07491601Recruiting
Preventing low parathyroid after thyroid surgery
This study aims to find ways to detect and prevent low parathyroid function after thyroid surgery. If you are having your whole thyroid removed, joining could help researchers learn how to improve recovery.
Würzburg, BavariaAges 18 years+ - NCT07484061Recruiting
Drinkable supplement for hair loss in women on weight-loss drugs
This trial tests if a special drinkable supplement can help prevent or reduce hair loss in women who are taking a GLP-1 or GIP receptor agonist (a type of weight-loss or diabetes medication). The study looks for women who have just started this medication or have been on it for less than 3 months.
Madrid, MadridAges 35 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 - NCT07479290RecruitingPhase 1
Vitamin D gel to speed up tooth movement after extraction
This trial tests whether applying vitamin D near the extraction site can speed up how quickly your canine teeth move into the gap after premolars are removed. It might help shorten your orthodontic treatment.
Islamabad, FederalAges 13 years+ - NCT04775381RecruitingPhase 3
Vitamin D before thyroid surgery to prevent low calcium
This study tests whether taking vitamin D (cholecalciferol) before a total thyroid removal can reduce the risk of developing low blood calcium afterward. If you’re having your thyroid removed, the results may help prevent symptoms like tingling, cramps, or spasms caused by low calcium.
AuxerreAges 18 years+ - NCT07465497Enrolling by invitation
Preventing Chemo Brain with Prebiotics and Synbiotics
This trial tests whether taking a special blend of prebiotics and synbiotics (friendly bacteria and food for them) can help prevent or reduce memory and thinking problems that sometimes happen during chemotherapy for breast cancer.
Zapopan, JaliscoAges 18 years+ - NCT07443410Recruiting
Probiotics for gum disease treatment
This trial tests whether taking pre- and probiotics alongside non-surgical gum treatment improves healing and reduces harmful bacteria. It may help people with advanced gum disease (stage III or IV periodontitis).
Heidelberg, Baden-WurttembergAges 18 years+ - 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 - NCT07431762RecruitingPhase 4
Aspirin vs. Warfarin after bioprosthetic valve surgery
This trial compares aspirin to warfarin in the first six months after receiving a bioprosthetic (tissue) heart valve. It aims to find which treatment better prevents blood clots without causing excessive bleeding.
OsakaAges 19 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 - 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+ - 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+ - 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+ - NCT07369063RecruitingPhase 2
Vitamin D for pediatric Graves' disease
This study tests whether adding vitamin D therapy to the usual Graves' disease treatment (methimazole) can improve thyroid function and lower antibody levels in children. If your child is between 9 and 17 and recently diagnosed, they may be able to participate.
New Hyde Park, New YorkAges 9–17 - NCT07366086RecruitingPhase 3
Long-term safety of romosozumab for osteogenesis imperfecta in children
This study follows children who previously received romosozumab in an earlier trial to check their long-term safety. It helps understand if the treatment's benefits last safely over time.
Indianapolis, IndianaAges 5–19 - 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 - NCT07331103Recruiting
Can a special diet reduce inflammation for heart health?
This study tests whether a special diet can reduce inflammation and improve heart health in people over 55 who are at increased risk for heart disease but have not yet had a heart attack or stroke.
Cortona, ArezzoAges 55 years+ - 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 - NCT07312435Recruiting
B vitamins and Omega-3s for brain health in older adults
This trial tests whether taking B vitamins and omega-3 fatty acids can slow brain shrinkage in older adults. It may help those with low vitamin levels keep their memory sharp.
OsloAges 65 years+
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.