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[Unsuccessful vitamin D treatment].
Anne Schmedes1, Henrik Hey, Iben Larsson
1Klinisk Biokemisk Afdeling, Sygehus Lillebælt, Vejle, Kabbeltoft 25, 7100 Vejle, Denmark. anne.vibeke.schmedes@slb.regionsyddanmark.dk
Ugeskrift for Laeger
|February 29, 2012
Summary
Vitamin D deficiency is common, and treatment failure can occur due to low doses, incorrect testing, obesity, or poor adherence. Vitamin D3 is more effective than vitamin D2, especially in injectable forms.
Area of Science:
- Endocrinology
- Nutritional Science
- Clinical Chemistry
Context:
- Increasing prevalence of vitamin D deficiency (< 25 nmol/l) affecting 15% of patients.
- Growing demand for vitamin D3 (25-OHD3) testing.
- Established link between vitamin D deficiency and osteopenia/osteoporosis.
Purpose:
- To identify reasons for unsuccessful vitamin D treatment.
- To evaluate the efficacy of ergocalciferol (vitamin D2) versus cholecalciferol (vitamin D3).
- To recommend optimal vitamin D supplementation strategies.
Summary:
- Treatment failure in vitamin D deficiency can stem from inadequate dosage, inaccurate analytical methods (particularly with vitamin D2 injections), obesity, seasonal factors, and poor patient compliance.
- Vitamin D3 demonstrates superior potency compared to vitamin D2.
- Injectable vitamin D2 formulations should be substituted with vitamin D3 for improved therapeutic outcomes.
Impact:
- Optimizing vitamin D treatment protocols to improve patient outcomes and reduce the incidence of bone-related diseases.
- Guiding clinical practice towards the preferential use of vitamin D3 over vitamin D2.
- Enhancing the accuracy of vitamin D level monitoring and interpretation.
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