Patients with pseudohypoparathyroidism, sarcoidosis, and patients taking thiazide diuretics or cardiac glycosides must be referred to their doctor and not supplied this as a Pharmacy medicine.
Vitamin D should be used with caution in patients with impairment of renal function and the effect on calcium and phosphate levels should be monitored. The risk of soft tissue calcification should be taken into account. In patients with severe renal insufficiency, vitamin D in the form of colecalciferol is not metabolised normally and other forms of vitamin D should be used (see section 4.3, contraindications).
During long-term treatment, serum calcium levels should be followed and renal function should be monitored through measurements of serum creatinine. Monitoring is especially important in elderly patients on concomitant treatment with cardiac glycosides or diuretics (see section 4.5) and in patients with a high tendency to calculus formation. In case of hypercalciuria (exceeding 300 mg (7.5 mmol)/24 hours) or signs of impaired renal function the dose should be reduced or the treatment discontinuedFultium-D3 should be prescribed with caution to patients suffering from sarcoidosis because of the risk of increased metabolism of vitamin D to its active form. These patients should be monitored with regard to the calcium content in serum and urine.
Allowances should be made for vitamin D supplements from other sources.
The need for additional calcium supplementation should be considered for individual patients. Calcium supplements should be given under close medical supervision. In such cases, it is necessary to monito serum calcium levels and unrinary calcium excretion frequently.
Medical supervision is required whilst on treatment to prevent hypercalcaemia.
During long-term treatment with a daily dose exceeding 1,000 IU vitamin D the serum calcium values must be monitored.
Fultium-D3 should not be given to children.