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fludarabine phosphate for injection, USP Dosage and Administration

DOSAGE AND ADMINISTRATION

Usual Dose: The recommended adult dose of Fludarabine Phosphate for Injection, USP is 25 mg/m2 administered intravenously over a period of approximately 30 minutes daily for five consecutive days. Each 5 day course of treatment should commence every 28 days. Dosage may be decreased or delayed based on evidence of hematologic or nonhematologic toxicity. Physicians should consider delaying or discontinuing the drug if neurotoxicity occurs.

A number of clinical settings may predispose to increased toxicity from fludarabine phosphate, USP. These include advanced age, renal insufficiency, and bone marrow impairment. Such patients should be monitored closely for excessive toxicity and the dose modified accordingly.

The optimal duration of treatment has not been clearly established. It is recommended that three additional cycles of fludarabine phosphate, USP be administered following the achievement of a maximal response and then the drug should be discontinued.

Renal Insufficiency: Adult patients with moderate impairment of renal function (creatinine clearance 30 to 70 mL/min/1.73 m2) should have a 20% dose reduction of fludarabine phosphate, USP. Fludarabine phosphate, USP should not be administered to patients with severely impaired renal function (creatinine clearance less than 30 mL/min/1.73 m2).

Preparation of Solutions: Fludarabine Phosphate for Injection, USP should be prepared for parenteral use by aseptically adding Sterile Water for Injection, USP. When reconstituted with 2 mL of Sterile Water for Injection, USP, the solid cake should fully dissolve in 15 seconds or less; each mL of the resulting solution will contain 25 mg of fludarabine phosphate, USP, 25 mg of mannitol, and sodium hydroxide to adjust the pH to 7.7. The pH range for the final product is 7.2 to 8.2. In clinical studies, the product has been diluted in 100 cc or 125 cc of 5% Dextrose Injection, USP or 0.9% Sodium Chloride, USP.

Reconstituted Fludarabine Phosphate for Injection, USP contains no antimicrobial preservative and thus should be used within 8 hours of reconstitution. Care must be taken to assure the sterility of prepared solutions. Parenteral drug products should be inspected visually for particulate matter and discoloration prior to administration.

Fludarabine Phosphate for Injection, USP should not be mixed with other drugs.

Handling and Disposal: Procedures for proper handling and disposal should be considered. Consideration should be given to handling and disposal according to guidelines issued for cytotoxic drugs. Several guidelines on this subject have been published.1-4

Caution should be exercised in the handling and preparation of Fludarabine Phosphate for Injection, USP solution. The use of latex gloves and safety glasses is recommended to avoid exposure in case of breakage of the vial or other accidental spillage. If the solution contacts the skin or mucous membranes, wash thoroughly with soap and water; rinse eyes thoroughly with plain water. Avoid exposure by inhalation or by direct contact of the skin or mucous membranes.

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