Journal
ENDOCRINE PRACTICE
Volume 15, Issue 2, Pages 95-103Publisher
AMER ASSOC CLINICAL ENDOCRINOLOGISTS
DOI: 10.4158/EP.15.2.95
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Funding
- Atlanta Research and Education Foundation
- Atlanta Veterans Affairs Medical Center
- University Research Committee of Emory University
- National Institutes of Health [K23AR054334]
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Objective: To determine the efficacy and safety of commonly prescribed regimens for the treatment of vitamin D insufficiency. Methods: We performed a retrospective analysis of 306 consecutive patients who were prescribed ergocalciferol (vitamin D-2) for correction of vitamin D insufficiency Lit the Atlanta Veterans Affairs Medical Center, between February 2003 and May 2006. Serum levels of parathyroid hormone, 25-hydroxyvitamin D (25-OHD), and calcium were compared before and after treatment with ergocalciferol. Patients who did not have a 25-OHD determination (n = 41) were excluded from analysis. Vitamin D deficiency, insufficiency, and sufficiency were defined as a serum 25-OHD level of <20 ng/mL, 21 to 29 ng/mL, and >= 30 ng/mL, respectively. Results: We identified 36 discrete prescribing regimens. The 3 most common regimens were ergocalciferol 50,000 IU once weekly for 4 weeks followed by 50,000 IU once monthly for 5 months (it = 48) ergocalciferol 50,000 IU once monthly for 6 months (it = 80) and ergocalciferol 50.000 1 U 3 times weekly for 6 weeks (n = 27). Each of these 3 treatments significantly increased serum 25-OHD (P<.01), but vitamin D sufficiency was achieved ill only 38% 42% and 82% of study subjects,respectively. Regimens with >600,000 IU of ergocalciferol given for a mean of 60 +/- 40 clays achieved sufficiency in 64% of cases, without vitamin D toxicity. Conclusion: In this study. regimens that contained at least 600,000 1 U of ergocalciferol appeared to be the most effective in achieving vitamin D sufficiency. Guidelines for the treatment of vitamin D insufficiency in healthy adults Should be developed. (Endocr Pract. 2009;15:951031)
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