Serum vitamin D level after an annual intramuscular injection of ergocalciferol.

Heikinheimo, R J; Haavisto, M V; Harju, E J; Inkovaara, J A; Kaarela, R H; Kolho, L A; Rajala, S A · Calcif Tissue Int · 1991

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Abstract

An annual intramuscular injection of ergocalciferol (150,000 IU) normalized low serum (25(OH)D concentrations in elderly people for 1 year. The treatment had a slight effect on serum 24,25(OH)2D levels but no effect on 1,25(OH)2D levels.

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