Overview
DESCRIPTION Cisplatin Injection is a clear, colorless to pale yellow solution. Each 100 mL amber vial of Cisplatin Injection contains: 1 mg per mL cisplatin USP, 9 mg per mL sodium chloride, hydrochloric acid and/or sodium hydroxide to adjust pH, and water for injection USP to a final volume of 50 mL and 100 mL respectively. The pH range of Cisplatin Injection is 3.8 to 5.9.
Mechanism of Action
CLINICAL PHARMACOLOGY Plasma concentrations of the parent compound, cisplatin, decay monoexponentially with a half-life of about 20 to 30 minutes following bolus administrations of 50 or 100 mg/m 2 doses. Monoexponential decay and plasma half-lives of about 0.5 hour are also seen following 2 hour or 7 hour infusions of 100 mg/m 2 . After the latter, the total-body clearances and volumes of distribution at steady-state for cisplatin are about 15 to 16 L/h/m 2 and 11 to 12 L/m 2 . Due to its unique chemical structure, the chlorine atoms of cisplatin are more subject to chemical displacement reactions by nucleophiles, such as water or sulfhydryl groups, than to enzyme-catalyzed metabolism. At physiological pH in the presence of 0.
Indications
- INDICATIONS AND USAGE Cisplatin Injection is indicated as therapy to be employed as follows: Metastatic Testicular Tumors In established combination therapy with other approved chemotherapeutic agents in patients with metastatic testicular tumors who have already received appropriate surgical and/or radio therapeutic procedures. Metastatic Ovarian Tumors In established combination therapy with other approved chemotherapeutic agents in patients with metastatic ovarian tumors who have already received appropriate surgical and/or radiotherapeutic procedures.
Common Doses
- 20 mg
- 100 mg
- 600 mg
- 70 mg
Dosage
DOSAGE AND ADMINISTRATION Cisplatin is administered by slow intravenous infusion. CISPLATIN SHOULD NOT BE GIVEN BY RAPID INTRAVENOUS INJECTION. Note: Needles or intravenous sets containing aluminum parts that may come in contact with cisplatin should not be used for preparation or administration. Aluminum reacts with cisplatin, causing precipitate formation and a loss of potency. Metastatic Testicular Tumors The usual cisplatin dose for the treatment of testicular cancer in combination with other approved chemotherapeutic agents is 20 mg/m 2 IV daily for 5 days per cycle.
Black Box Warning
WARNING Cisplatin should be administered under the supervision of a qualified physician experienced in the use of cancer chemotherapeutic agents. Appropriate management of therapy and complications is possible only when adequate diagnostic and treatment facilities are readily available. Cumulative renal toxicity associated with cisplatin is severe. Other major dose-related toxicities are myelosuppression, nausea, and vomiting. Ototoxicity, which may be more pronounced in children, and is manifested by tinnitus, and/or loss of high frequency hearing and occasionally deafness, is significant.
Contraindications
- CONTRAINDICATIONS Cisplatin is contraindicated in patients with pre-existing renal impairment. Cisplatin should not be employed in myelosuppressed patients, or in patients with hearing impairment. Cisplatin is contraindicated in patients with a history of allergic reactions to cisplatin or other platinum containing compounds.
Side Effects
- ADVERSE REACTIONS Nephrotoxicity Dose-related and cumulative renal insufficiency, including acute renal failure, is the major dose-limiting toxicity of cisplatin. Renal toxicity has been noted in 28% to 36% of patients treated with a single dose of 50 mg/m 2 . It is first noted during the second week after a dose and is manifested by elevations in BUN and creatinine, serum uric acid and/or a decrease in creatinine clearance. Renal toxicity becomes more prolonged and severe with repeated courses of the drug. Renal function must return to normal before another dose of cisplatin can be given.
Interactions
- Drug Interactions Plasma levels of anticonvulsant agents may become subtherapeutic during cisplatin therapy. In a randomized trial in advanced ovarian cancer, response duration was adversely affected when pyridoxine was used in combination with altretamine (hexamethylmelamine) and cisplatin.