ergocalciferol(redirected from calyciferol)
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vitamin D2; a sterol occurring naturally in fungi and some fish oils or synthesized from ergosterol, and similar to cholecalciferol in activity and metabolism; it is administered orally or added to food (e.g., milk) as a dietary source of vitamin D. It is also used in treatment of hypocalcemia, hypophosphatemia, rickets, and osteodystrophy associated with various medical conditions including chronic renal failure and hypoparathyroidism, administered orally, intramuscularly, or intravenously.
Activated ergosterol, the vitamin D of plant origin; it arises from ultraviolet irradiation of ergosterol, which is cleaved at the 9,10 bond and develops a double bond between C-10 and C-19; used in prophylaxis and treatment of vitamin D deficiency.
ergocalciferol/er·go·cal·cif·er·ol/ (er″go-kal-sif´er-ol) vitamin D; a sterol occurring in fungi and some fish oils or synthesized from ergosterol, with similar activity and metabolism to those of cholecalciferol; used as a dietary source of vitamin D and in the treatment of hypocalcemia, hypophosphatemia, rickets, and osteodystrophy associated with a variety of disorders.
See vitamin D2.
ergocalciferolVitamin D2. This is produced in the body by the action of ultraviolet light on ergosterol. Vitamin D is necessary for the normal mineralization of bone. Deficiency leads to RICKETS in growing children and bone softening (OSTEOMALACIA) in adults. The drug is on the WHO official list.
vitamin D2; an oil-soluble antirachitic vitamin. See also vitamin d.