Vitamin D deficiency
MONDO:0100471Abnormally low level of 25-hydroxyvitamin D in the blood.
Also known as: DEFIC VITAMIN D, VITAMIN D DEFIC, avitaminosis D, avitaminosis D, NOS, deficiencies, vitamin D, deficiency of vitamin D (disorder), deficiency, vitamin D, vitamin D deficiencies
96 clinical trials for this condition and its sub-types.
Follow this condition — get notified about new trialsBroader categories
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New vitamin d pill aims to tame parathyroid glands in dialysis patients
Disease control TerminatedThis phase 2 study tested a weekly extended-release capsule of calcifediol (CTAP101) in 44 adults with chronic kidney disease on hemodialysis who also had vitamin D insufficiency and secondary hyperparathyroidism. The goal was to see if the drug could raise vitamin D levels and l…
Phase: PHASE2 • Sponsor: OPKO Health, Inc. • Aim: Disease control
Last updated Jun 27, 2026 12:03 UTC
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Could a vitamin d boost make flu shots work better for seniors?
Prevention TerminatedThis trial tests whether giving older adults a high dose of vitamin D before their flu shot can strengthen their immune response. Participants are 65 or older with low vitamin D levels. The study measures changes in infection-fighting proteins and antibody levels after vaccinatio…
Phase: PHASE2 • Sponsor: University Hospital, Clermont-Ferrand • Aim: Prevention
Last updated Aug 08, 2026 00:03 UTC