Treatment
Vitamin D clinical trials
We’re tracking 123 recruiting studies that include Vitamin D, each written for real people, not researchers, below.
Recruiting studies
- NCT04036188RecruitingEarly Phase 1
Vitamin D and triamcinolone for plaque psoriasis
This early study tests whether taking vitamin D together with triamcinolone (a steroid used on skin) works better for plaque psoriasis than a standard approach. It aims to see if the combination helps clear psoriasis plaques and is safe.
Fairborn, OhioAges 18 years+ - NCT07096336Recruiting
Vitamin D3 and brain waves in Parkinson's study
This study tests whether taking vitamin D3 can improve brain wave patterns in men with Parkinson's disease who have low vitamin D levels. It may help understand if vitamin D supports brain health.
Dhaka, ShahbagAges 51–70 - NCT06861062Recruiting
Vitamin D and yeast beta-glucan for type 2 diabetes
This trial tests if taking vitamin D3 and yeast beta-glucan supplements can help control blood sugar and lower heart disease risk in people with type 2 diabetes. It may be an option for those who want to see if supplements can improve their diabetes management.
Nanning, GuangxiAges 40–79 - 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 - NCT07647198RecruitingPhase 2
Green tea extract and vitamin D to prevent fibroid return
This study tests whether two natural supplements—green tea extract (EGCG) and vitamin D—can help prevent uterine fibroids from coming back after treatment. You would take these supplements for 12 months while avoiding pregnancy.
Abu Dhabi, United Arab Emirates (uae)Ages 18 years+ - NCT06553729Recruiting
Vitamin D and prebiotic supplement for blood sugar during pregnancy
This trial tests whether taking a combination of vitamin D and a prebiotic can help manage blood sugar levels in pregnant women at high risk for gestational diabetes. It may offer a simple way to support a healthy pregnancy.
Zhanjiang, GuangdongAges 18–45 - NCT04442412RecruitingPhase 3
Prednisone and vitamin D before chemo for certain lymphomas
This Phase 3 study tests whether a short “pre-treatment” with prednisone, with or without vitamin D, can improve outcomes when followed by standard lymphoma chemo. It aims to see if adding vitamin D early can help older adults tolerate or benefit from treatment for specific lymphoma types.
Brescia, BSAges 65 years+ - NCT03188796RecruitingPhase 3
High-dose vitamin D for ICU patients with low vitamin D
This trial tests whether giving a high dose of vitamin D3 can reduce death within 28 days for critically ill adults in the ICU who have very low vitamin D levels. It may help by correcting vitamin D deficiency, which the study team thinks could affect outcomes in serious illness.
EnzenbachAges 18–100 - NCT07053657Recruiting
Vitamin D for heart health in overweight teens
This study looks at whether giving vitamin D can improve heart and metabolic health in overweight or obese teens who have low vitamin D levels. It may help lower risks like high blood sugar or cholesterol.
Anqing, AnhuiAges 10–16 - NCT05667090Recruiting
High-dose vitamin D3 to ease chronic pain in dialysis patients
This study tests whether taking a very high dose of vitamin D3 can reduce moderate to severe chronic pain in people on hemodialysis. It may help by improving vitamin D-related pathways that could affect pain, but you must also meet specific health and testing requirements.
TaipeiAges 20 years+ - NCT05174611RecruitingPhase 2
Vitamin D to strengthen the thigh after ACL surgery
This Phase 2 study tests whether taking vitamin D can improve thigh (quadriceps) muscle strength after ACL reconstruction. It targets people with low vitamin D levels that persist after surgery and weaker thigh strength on the injured side.
Hong KongAges 18–40 - NCT06201013Recruiting
Vitamin D for children with wet overactive bladder
This trial tests whether giving vitamin D to children with 'wet' overactive bladder (OAB) – where they leak urine with sudden urges – can help improve symptoms. It's for children aged 5 and older who have low vitamin D levels and no other serious health conditions.
Chongqing, Chongqing MunicipalityAges 5–18 - 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+ - NCT07757477Recruiting
Sunlight for vitamin D in kids with cerebral palsy
This study tests whether sunlight exposure can help raise vitamin D levels in young children with cerebral palsy. It aims to see if more sunlight can improve their health and well-being.
Jakarta Pusat, DKI JakartaAges 1–5 - 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 - NCT07153302Recruiting
Can almonds help heal broken leg bones?
This study tests if eating almonds can help femur (thigh) or tibia (shin) fractures heal faster. If you have a fresh leg break and are 18 to 55, you may be able to join.
KarachiAges 18–55 - 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+ - 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+ - 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 - NCT07296471Recruiting
Vitamin D and Bone Health Study
This study is looking at how vitamin D levels relate to bone health and overall health markers in people with and without osteoporosis. It aims to find better ways to understand and treat bone loss.
Yichang, HubeiAges 18 years+ - NCT07222111Recruiting
Dried plums for immune health in postmenopausal women
This study tests whether eating dried plums every day can improve immune function in women after menopause. Participants will eat dried plums and provide stool samples at four times during the study.
Indianapolis, IndianaAges 60–75 - NCT06982703Enrolling by invitation
Butyrate for antibiotic-related diarrhea
This trial tests if a supplement called butyrate can prevent or reduce diarrhea caused by antibiotics. If you're starting antibiotics, you may be able to join.
PadovaAges 18–80 - NCT03008525Recruiting
Testing vitamin D levels in body fat tissue during surgery
This study measures vitamin D (and related forms) in fat tissue samples taken during surgery. It compares people with obesity to people without obesity to understand how vitamin D is handled in fat.
MarseilleAges 18–65 - NCT03516968RecruitingPhase 3
Monthly vs daily vitamin D for obese children
This study compares taking vitamin D as a monthly dose versus a daily dose in children with low vitamin D levels. It aims to correct the vitamin D deficiency and see which schedule works best and is safe.
BronAges 5–18
Common questions
- Are there clinical trials studying Vitamin D?
- Yes. Clin2 currently lists 123 recruiting studies that include Vitamin D, 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 D 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 D 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 D 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.