Source: European Medicines Agency (EU) Revision Year: 2021 Publisher: Pfizer Europe MA EEIG, Boulevard de la Plaine, 17 1050, Bruxelles, Belgium
Zoledronic acid must only be prescribed and administered to patients by healthcare professionals experienced in the administration of intravenous bisphosphonates. Patients treated with zoledronic acid should be given the package leaflet and the patient reminder card.
The recommended dose in the prevention of skeletal related events in patients with advanced malignancies involving bone is 4 mg zoledronic acid every 3 to 4 weeks.
Patients should also be administered an oral calcium supplement of 500 mg and 400 IU vitamin D daily.
The decision to treat patients with bone metastases for the prevention of skeletal related events should consider that the onset of treatment effect is 2-3 months.
The recommended dose in hypercalcaemia (albumin-corrected serum calcium ≥12.0 mg/dl or 3.0 mmol/l) is a single dose of 4 mg zoledronic acid.
Zoledronic acid treatment in TIH patients who also have severe renal impairment should be considered only after evaluating the risks and benefits of treatment. In the clinical studies, patients with serum creatinine >400 μmol/l or >4.5 mg/dl were excluded. No dose adjustment is necessary in TIH patients with serum creatinine <400 μmol/l or <4.5 mg/dl (see section 4.4).
When initiating treatment with zoledronic acid in patients with multiple myeloma or metastatic bone lesions from solid tumours, serum creatinine and creatinine clearance (CLcr) should be determined. CLcr is calculated from serum creatinine using the Cockcroft-Gault formula. Zoledronic acid is not recommended for patients presenting with severe renal impairment prior to initiation of therapy, which is defined for this population as CLcr <30 ml/min. In clinical trials with zoledronic acid, patients with serum creatinine >265 μmol/l or >3.0 mg/dl were excluded.
For patients with normal renal function (defined as CLcr >60 ml/min), zoledronic acid 4 mg/100 ml solution for infusion may be administered directly without any further preparation. In patients with bone metastases presenting with mild to moderate renal impairment prior to initiation of therapy, which is defined for this population as CLcr 30-60 ml/min, reduced Zoledronic Acid Hospira doses are recommended (see also section 4.4).
Baseline creatinine clearance (ml/min) | Zoledronic Acid Hospira recommended dose* |
---|---|
>60 | 4.0 mg zoledronic acid |
50–60 | 3.5 mg* zoledronic acid |
40–49 | 3.3 mg* zoledronic acid |
30–39 | 3.0 mg* zoledronic acid |
* Doses have been calculated assuming target AUC of 0.66 (mg•hr/l) (CLcr = 75 ml/min). The reduced doses for patients with renal impairment are expected to achieve the same AUC as that seen in patients with creatinine clearance of 75 ml/min.
Following initiation of therapy, serum creatinine should be measured prior to each dose of Zoledronic Acid Hospira and treatment should be withheld if renal function has deteriorated. In the clinical trials, renal deterioration was defined as follows:
In the clinical studies, zoledronic acid treatment was resumed only when the creatinine level returned to within 10% of the baseline value (see section 4.4). Zoledronic Acid Hospira treatment should be resumed at the same dose as that given prior to treatment interruption.
The safety and efficacy of zoledronic acid in children aged 1 year to 17 years have not been established. Currently available data are described in section 5.1 but no recommendation on a posology can be made.
Intravenous use.
Zoledronic Acid Hospira should be given as a single intravenous infusion in no less than 15 minutes.
In patients with normal renal function, defined as CLcr >60 ml/min, zoledronic acid 4 mg/100 ml solution for infusion must not be further diluted.
In patients with mild to moderate renal impairment, reduced Zoledronic Acid Hospira doses are recommended (see section “Posology” above and section 4.4).
To prepare reduced doses for patients with baseline CLcr ≤60 ml/min, refer to Table 1 below. Remove the volume of Zoledronic Acid Hospira solution indicated from the bag prior to administration.
Table 1. Preparation of reduced doses of Zoledronic Acid Hospira 4 mg/100 ml solution for infusion:
Baseline creatinine clearance (ml/min) | Remove the following amount of Zoledronic Acid Hospira 4 mg/100 ml solution for infusion (ml) | Adjusted dose (mg zoledronic acid) |
---|---|---|
50-60 | 12.0 | 3.5 |
40-49 | 18.0 | 3.3 |
30-39 | 25.0 | 3.0 |
Zoledronic Acid Hospira must not be mixed with other infusion solutions and should be administered as a single intravenous solution in a separate infusion line.
Patients must be maintained well hydrated prior to and following administration of Zoledronic Acid Hospira.
Clinical experience with acute overdose of zoledronic acid is limited. The administration of doses up to 48 mg of zoledronic acid in error has been reported. Patients who have received doses higher than those recommended (see section 4.2) should be carefully monitored, since renal function impairment (including renal failure) and serum electrolyte (including calcium, phosphorus and magnesium) abnormalities have been observed. In the event of hypocalcaemia, calcium gluconate infusions should be administered as clinically indicated.
Unopened bag: 2 years.
After first opening: From a microbiological point of view, the product should be used immediately. If not used immediately, in-use storage times and conditions prior to use are the responsibility of the user and would normally not be longer than 24 hours at 2°C-8°C. The refrigerated solution should then be equilibrated to room temperature prior to administration.
This medicinal product does not require any special storage conditions.
For storage conditions after first opening of the medicinal product, see section 6.3.
100 ml polypropylene bags with a polypropylene twist-off port fitted with a cap, with a polyester/polypropylene overwrap.
Pack size: Zoledronic Acid Hospira is supplied as packs containing 1 bag.
Aseptic techniques must be followed during the preparation of the infusion. For single use only.
Only clear solution free from particles and discolouration should be used.
Healthcare professionals are advised not to dispose of unused Zoledronic Acid Hospira via the domestic sewage system.
Any unused medicinal product or waste material should be disposed of in accordance with local requirements.
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