Vitamin D treatment registry at San Raffaele

This trial tests two forms of vitamin D (cholecalciferol and calcifediol) to see which better raises vitamin D levels in people with a deficiency. It may help you if your vitamin D is low, but you don't have osteoporosis or liver/kidney problems.

This trial tests whether taking vitamin D can improve the uterine lining’s readiness for pregnancy in women who struggle to conceive. It compares different groups of infertile patients to see who may benefit and to monitor for safety.

This trial tests if eating foods with extra vitamin D can improve vitamin D levels in families. It provides study foods and checks your vitamin D through blood samples.

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.

This trial checks if measuring vitamin D in dialysis patients can lead to better treatment, then gives vitamin D supplements to those who are low. It may help improve your bone and heart health.

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.