{"id":"vitamin-d-supplement","safety":{"commonSideEffects":[{"rate":null,"effect":"Hypercalcemia (at high doses)"},{"rate":null,"effect":"Nausea"},{"rate":null,"effect":"Constipation"},{"rate":null,"effect":"Weakness or fatigue"}]},"_chembl":null,"_dailymed":{"setId":"d8572c5e-001f-4cf9-aaca-cb3167370ae2","title":"VITAL-D RX (MULTI VITAMIN/MINERAL SUPPLEMENT CONTAINING VITAMIN C, VITAMIN D, VITAMIN E, THIAMIN, RIBOFLAVIN, NIACIN, PYRIDOXINE, FOLIC ACID, COBALAMIN, BIOTIN, PANTOTHENIC ACID, SELENIUM AND ZINC) TABLET, COATED [NEPHRO-TECH, INC.]"},"mechanism":{"_ai_source":"claude-haiku-4.5","explanation":"Vitamin D is converted in the liver and kidneys to its active form, calcitriol, which binds to the vitamin D receptor (VDR) in target tissues. This binding regulates intestinal calcium absorption, bone mineralization, and immune cell differentiation. Additionally, vitamin D modulates innate and adaptive immune responses through effects on dendritic cells, T cells, and B cells.","oneSentence":"Vitamin D acts as a steroid hormone precursor that regulates calcium and phosphate homeostasis and modulates immune function.","_ai_confidence":"high"},"_scrapedAt":"2026-03-28T00:15:32.299Z","_scrapedBy":"cloudflare-swarm","_wikipedia":null,"indications":{"approved":[{"name":"Vitamin D deficiency"},{"name":"Osteoporosis and bone health"},{"name":"Calcium malabsorption"},{"name":"Hypoparathyroidism"}]},"trialDetails":[{"nctId":"NCT07356440","phase":"NA","title":"Effect of the Consumption of Cookies Enriched With Plant Proteins and of a Vitamin D Supplement on the Progression of Sarcopenia in the Elderly","status":"ENROLLING_BY_INVITATION","sponsor":"University of Udine","startDate":"2025-12-01","conditions":"Sarcopenia in Elderly, Sarcopenia, Nutritional Intervention","enrollment":74},{"nctId":"NCT00856947","phase":"PHASE1","title":"Vitamin D 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