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DOSAGE AND ADMINISTRATION
Calcijex is for intravenous injection only.
The optimal dose of Calcijex (calcitriol injection) must be carefully determined for each patient.
The effectiveness of Calcijex therapy is predicated on the assumption that each patient is receiving an adequate and appropriate daily intake of calcium. The RDA for calcium in adults is 800 mg. To ensure that each patient receives an adequate daily intake of calcium, the physician should either prescribe a calcium supplement or instruct the patient in proper dietary measures.
The recommended initial dose of Calcijex, depending on the severity of the hypocalcemia and/or secondary hyperparathyroidism, is 1 meg (0.02 meg/kg) to 2 meg administered intravenously three times weekly, approximately every other day. Doses as small as 0.5 meg and as large as 4 meg three times weekly have been used as an initial dose. If a satisfactory response is not observed, the dose may be increased by 0.5 to 1 meg at two to four week intervals. During this titration period, serum calcium and phosphorus levels should be obtained at least twice weekly. If hypercalcemia or a serum calcium times phosphate product greater than 70 is noted, the drug should be immediately discontinued until these parameters are appropriate. Then, the Calcijex dose should be reinitiated at a lower dose. Doses may need to be reduced as the PTH levels decrease in response to the therapy. Thus, incremental dosing must be individualized and commensurate with PTH, serum calcium and phosphorus levels. The following is a suggested approach in dose titration:
|PTH Levels||Calcijex Dose|
|the same or increasing||increase|
|decreasing by < 30%||increase|
|decreasing by > 30%, < 60%||maintain|
|decreasing by > 60%||decrease|
|one and one-half to three times the upper limit of normal||maintain|
Parenteral drug products should be inspected visually for particulate matter and discoloration prior to administration, whenever solution and container permit.
Discard unused portion.
Calcijex (calcitriol injection) is supplied as follows:
Protect from light.
Store at 20° - 25°C (68° - 77°F); excursions permitted to 15° - 30°C (59° - 86°F) [see USP Controlled Room Temperature]
Mfd. by: Hospira, Inc. Lake Forest, IL 60045 USA. For: Abbott Laboratories, North Chicago, IL 60064 USA. Revised: 03/2012
Last reviewed on RxList: 3/26/2012
This monograph has been modified to include the generic and brand name in many instances.
Additional Calcijex Injection Information
- Calcijex Injection Drug Interactions Center: calcitriol iv
- Calcijex Injection Side Effects Center
- Calcijex Injection Overview including Precautions
- Calcijex Injection FDA Approved Prescribing Information including Dosage
Report Problems to the Food and Drug Administration
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