Labled: Bone metastases(solid tumors), Hypercalcemia of malignancy, Multiple myeloma, Osteoporosis, Paget disease
Off-Label: Breast cancer, bone loss associated with aromatase inhibitor therapy in postmenopausal females; Breast cancer, early stage, adjuvant therapy in postmenopausal females; Prostate cancer, bone loss associated with androgen deprivation therapy
藥理
Bisphosphonate Derivative
藥動學
Distribution: Binds to bone Protein binding: 23% to 53% Metabolism: Primarily eliminated intact via the kidney; metabolism not likely Half-life elimination: Triphasic; Terminal: 146 hours Excretion: Urine (39% ± 16% as unchanged drug) within 24 hours; feces (<3%) Renal function impairment: Mild renal impairment (CrCl 50 to 80 mL/minute) increased AUC by an average of 15%. Moderate renal impairment (CrCl 30 to 50 mL/minute) increased AUC by an average of 43%. The risk of renal deterioration appears to increase with AUC, which doubled at a CrCl of 10 mL/minute.
禁忌症
1. Hypersensitivity to zoledronic acid or other bisphosphonates 2. hypocalcemia 3. CrCl <35 mL/minute and in those with evidence of acute renal impairment 4. pregnancy 5. breast-feeding
懷孕分類
It is not known if bisphosphonates cross the placenta, but fetal exposure is expected
Oncology uses, labled indication:
1. Bone metastases, solid tumors : 4 mg once every 3 to 4 weeks.
2. Hypercalcemia of malignancy (albumin-corrected serum calcium 12 mg/dL) : 4 mg (maximum) given as a single dose. May repeat dose after 7 days if hypercalcemia persists.
Nononcology uses:
1.Osteoporosis, prevention of fractures ( For males and postmenopausal females): Treatment: 5 mg once every 12 months. Prevention: 5 mg once every 2 years or 5 mg as a single dose. Duration of therapy: Consider discontinuing after 3 years if bone mineral density is stable. If fracture risk remains high, consider extending treatment for up to 6 years or switching to alternative therapy.
2. Glucocorticoid-induced (Avoid use in females who are pregnant, who plan on becoming pregnant, or who are not using effective birth control): 5 mg once every 12 months.
3. Paget disease (For symptomatic patients with active disease): Treatment: 5 mg as a single dose. Re-treatment: A repeat 5 mg dose may be considered after 12 months in patients with biochemical relapse (eg, increase in alkaline phosphatase), radiographic progression of disease, or recurrent pain.
小兒調整劑量
Osteoporosis, primary or secondary
Note: Acetaminophen or ibuprofen 30 minutes prior to infusion and 6 hours after is recommended to reduce acute phase reactions
1. Children <2 years :
(1) First dose: 0.0125 mg/kg/dose.
(2) Maintenance (to begin 3 months after first dose): 0.025 mg/kg/dose every 3 months.
2. Children >2 years and Adolescents:
(1) First dose: 0.0125 mg/kg/dose.
(2) Second dose (3 months after first dose): 0.025 mg/kg/dose.
(3) Maintenance (to begin 6 months after first dose):0.05 mg/kg/dose every 6 months; maximum dose: 4 mg/dose.
3. Dose adjustment based on lumbar spine bone mineral density (BMD) Z score: Children >2 years and Adolescents:
(1) BMD Z score >or=2: Decrease dose to 0.025 mg/kg/dose every 6 months.
(2) BMD Z score >0: Decrease dose to 0.025 mg/kg/dose every 12 months.
腎功能調整劑量
Nononcology uses CrCl 35 to 80 mL/minute: No dosage adjustment is necessary. CrCl <35 mL/minute: Use is contraindicated.
Oncology uses: Multiple myeloma and bone metastases from solid tumors: CrCl >60 mL/minute: 4 mg (no dosage adjustment is necessary). CrCl 50 to 60 mL/minute: Reduce dose to 3.5 mg. CrCl 40 to 49 mL/minute: Reduce dose to 3.3 mg. CrCl 30 to 39 mL/minute: Reduce dose to 3 mg. CrCl <30 mL/minute: Use is not recommended.