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Vitamin D formulations available in Italy.
| Vitamin D type | Formulation | Biological half-life | Ipercalcemic/ ipercalciuric risk |
| Calcitriol | Tablets 0,25-0,50 μg | < 24 hrs | +++ |
| 1-α-hydroxycholecalciferol | Tablets 0.25-1 μg | < 24 hrs | ++ |
| Calcifediol | Gtt (1 gtt= 200 IU) | 1-2 weeks | + |
| Ergocalciferol | Fl os im 400000 IU Fl os im 600000 IU | months | + |
| Cholecalciferol | Fl os im 10000 IU Fl os im 100000 IU Fl os im 300000 IU | months | + |
