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  • Title: [Vitamin D metabolites in a new case of drug-induced hypercalcemia (author's transl)].
    Author: Ulmann A, Bourdeau A, Lair M, Bader C.
    Journal: Nouv Presse Med; 1981 Oct 10; 10(36):2965-7. PubMed ID: 6974854.
    Abstract:
    The authors report on a new case of severe hypercalcaemia induced by prolonged oral treatment with high doses of vitamin D2. (6 mg/day for 9 months). Blood calcium level did not return to normal until 6 months after the drug was discontinued. The plasma concentration of 25 (OH) D was more than three times the normal value and remained very high throughout the observation period. The plasma concentration of 24, 25 (OH)2 D was slightly raised during treatment but became normal after 15 days, while that of 1,25 (OH)2 D, the active form of vitamin D, remained normal throughout, suggesting that the pathogenesis of vitamin D-induced hypercalcaemia is probably complex.
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