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Allergy: Allergy to Vitamin D3 or Hypersensitivity to the active substance(s) or to any of the excipients.
Hypercalcaemia and/or hypercalciuria: The blood calcium levels should be confirmed before taking this medication.
Nephrolithiasis and/or nephrocalcinosis.
Serious renal impairment.
Hypervitaminosis D.
Malabsorption Syndrome.
Pseudohypoparathyroidism as the Vitamin D3 requirement may be reduced due to phases of normal Vitamin D3 sensitivity, involving the risk of prolonged overdose. Better regulatable Vitamin D3 derivatives are available for this.
