Ifosfamide
Generic Name: ifosfamide
Brand Names:
Ifosfamide
11 DESCRIPTION Ifosfamide for Injection (ifosfamide for injection, USP) single-dose vials for constitution and administration by intravenous infusion each contain 1 gram or 3 grams of sterile ifosfamide. Ifosfamide is a alkylating drug chemically related to the nitrogen mustards and a synthetic analog of cyclophosphamide. Ifosfamide is 3-(2-chloroethyl)-2-[(2-chloroethyl)amino]tetrahydro-2H-1,3,2-oxazaphosphorine 2-oxide.
Overview
11 DESCRIPTION Ifosfamide for Injection (ifosfamide for injection, USP) single-dose vials for constitution and administration by intravenous infusion each contain 1 gram or 3 grams of sterile ifosfamide. Ifosfamide is a alkylating drug chemically related to the nitrogen mustards and a synthetic analog of cyclophosphamide. Ifosfamide is 3-(2-chloroethyl)-2-[(2-chloroethyl)amino]tetrahydro-2H-1,3,2-oxazaphosphorine 2-oxide.
Uses
1 INDICATIONS AND USAGE Ifosfamide for Injection is indicated for use in adults in combination with certain other approved antineoplastic agents for third-line chemotherapy of germ cell testicular cancer. Ifosfamide for Injection is an alkylating drug indicated for use in adults in combination with certain other approved antineoplastic agents for third-line chemotherapy of germ cell testicular cancer. ( 1 )
Dosage
2 DOSAGE AND ADMINISTRATION • Administer Ifosfamide for Injection with extensive hydration consisting of at least 2 liters of oral or intravenous fluid per day to reduce the incidence or severity of bladder toxicity. ( 2.1 , 5.3 ) • Administer mesna with Ifosfamide for Injection to reduce the incidence or severity of hemorrhagic cystitis. ( 2.1 , 5.3 ) • Administer Ifosfamide for Injection as a slow intravenous infusion (at least 30 minutes) at a dose of 1.2 grams per m 2 per day for 5 consecutive days. Repeat every 3 weeks or after recovery from hematologic toxicity. ( 2.2 ) • Individualize the dose and dosing schedule of Ifosfamide for Injection based on patient risk factors and adverse reactions.
Side Effects
6 ADVERSE REACTIONS The most common (≥ 10%) adverse reactions were alopecia, nausea/vomiting, hematuria, leukopenia, anemia, CNS toxicity, infection. ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact Baxter Healthcare at phone: 1 866 888 2472 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch . 6.1 Clinical Trials Experience Because clinical trials are conducted from widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in clinical practice.
Interactions
7 DRUG INTERACTIONS • CYP3A4 Inducers: Monitor for increased toxicity when used in combination with CYP3A4 inducers. ( 7.1 ) • CYP3A4 Inhibitors: Use in combination with CYP3A4 inhibitors could decrease the effectiveness of ifosfamide. ( 7.2 ) 7.1 Inducers of CYP3A4 CYP3A4 inducers may increase the metabolism of ifosfamide to its active alkylating metabolites. CYP3A4 inducers may increase the formation of the neurotoxic/nephrotoxic ifosfamide metabolite, chloroacetaldehyde. Closely monitor patients taking ifosfamide with CYP3A4 inducers for toxicities and consider dose adjustment. 7.2 Inhibitors of CYP3A4 CYP3A4 inhibitors may decrease the metabolism of ifosfamide to its active alkylating metabolites, perhaps decreasing the effectiveness of ifosfamide treatment.
Warnings
WARNING: MYELOSUPPRESSION, ENCEPHALOPATHY, NEPHROTOXICITY and UROTOXICITY • Myelosuppression can be severe and lead to fatal infections. Monitor blood counts prior to and at intervals after each treatment cycle [see Warnings and Precautions (5.1) ]. • Encephalopathy can be severe and may result in death. Monitor for CNS toxicity and discontinue treatment for encephalopathy [see Warnings and Precautions (5.2) ]. • Nephrotoxicity can be severe and result in renal failure. 5 WARNINGS AND PRECAUTIONS • Myelosuppression: Monitor blood counts prior to treatment, during treatment, and as clinically indicated. ( 5.1 ) • Encephalopathy: Monitor for signs and symptoms of CNS toxicity during and after Ifosfamide for Injection treatment. Dose interruption or permanent discontinuation may be required based on individual safety and tolerability. ( 5.2 ) • Nephrotoxicity and Urotoxicity: Monitor signs and symptoms. Monitor serum and urine chemistries. (2.1, 5.3 ) • Cardiotoxicity: Arrhythmias, other ECG changes, and cardiomyopathy can occur and result in death. Cardiotoxicity is dose dependent and the risk is increased in patients with preexisting cardiac, treatment with other cardiotoxic agents, radiation, and renal impairment. 4 CONTRAINDICATIONS Ifosfamide for Injection is contraindicated in patients with: • Known hypersensitivity to administration of ifosfamide. • Urinary outflow obstruction. • Known hypersensitivity to administration of ifosfamide. ( 4 ) • Urinary outflow obstruction. ( 4 )
Pregnancy
8.1 Pregnancy Risk Summary Based on mechanism of action [see Clinical Pharmacology (12.1) ] , and human and animal data (see Data) , Ifosfamide for Injection can cause fetal harm when administered to a pregnant woman. Fetal growth retardation and neonatal anemia have been reported following exposure to ifosfamide‑containing chemotherapy regimens during pregnancy. In the U.S. general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is 2 to 4% and 15 to 20%, respectively.
Storage
16 HOW SUPPLIED/STORAGE AND HANDLING Ifosfamide for injection is available in single-dose vials as follows: NDC 10019-925-01 1-gram Single-Dose Vial NDC 10019-926-02 3-gram Single-Dose Vial Store at controlled room temperature 20°C to 25°C (68°F to 77°F). Protect from temperatures above 30°C (86°F).
Frequently Asked Questions
What is Ifosfamide used for?▼
1 INDICATIONS AND USAGE Ifosfamide for Injection is indicated for use in adults in combination with certain other approved antineoplastic agents for third-line chemotherapy of germ cell testicular cancer. Ifosfamide for Injection is an alkylating drug indicated for use in adults in combination with certain other approved antineoplastic agents for third-line chemotherapy of germ cell testicular cancer. ( 1 )
What are the side effects of Ifosfamide?▼
6 ADVERSE REACTIONS The most common (≥ 10%) adverse reactions were alopecia, nausea/vomiting, hematuria, leukopenia, anemia, CNS toxicity, infection. ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact Baxter Healthcare at phone: 1 866 888 2472 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch . 6.1 Clinical Trials Experience Because clinical trials are conducted from widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in clinical practice.
Can I take Ifosfamide during pregnancy?▼
8.1 Pregnancy Risk Summary Based on mechanism of action [see Clinical Pharmacology (12.1) ] , and human and animal data (see Data) , Ifosfamide for Injection can cause fetal harm when administered to a pregnant woman. Fetal growth retardation and neonatal anemia have been reported following exposure to ifosfamide‑containing chemotherapy regimens during pregnancy. In the U.S. general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is 2 to 4% and 15 to 20%, respectively.
What are the important warnings for Ifosfamide?▼
WARNING: MYELOSUPPRESSION, ENCEPHALOPATHY, NEPHROTOXICITY and UROTOXICITY • Myelosuppression can be severe and lead to fatal infections. Monitor blood counts prior to and at intervals after each treatment cycle [see Warnings and Precautions (5.1) ]. • Encephalopathy can be severe and may result in death. Monitor for CNS toxicity and discontinue treatment for encephalopathy [see Warnings and Precautions (5.2) ]. • Nephrotoxicity can be severe and result in renal failure. 5 WARNINGS AND PRECAUTIONS • Myelosuppression: Monitor blood counts prior to treatment, during treatment, and as clinically indicated. ( 5.1 ) • Encephalopathy: Monitor for signs and symptoms of CNS toxicity during and after Ifosfamide for Injection treatment. Dose interruption or permanent discontinuation may be required based on individual safety and tolerability. ( 5.2 ) • Nephrotoxicity and Urotoxicity: Monitor signs and symptoms. Monitor serum and urine chemistries. (2.1, 5.3 ) • Cardiotoxicity: Arrhythmias, other ECG changes, and cardiomyopathy can occur and result in death. Cardiotoxicity is dose dependent and the risk is increased in patients with preexisting cardiac, treatment with other cardiotoxic agents, radiation, and renal impairment. 4 CONTRAINDICATIONS Ifosfamide for Injection is contraindicated in patients with: • Known hypersensitivity to administration of ifosfamide. • Urinary outflow obstruction. • Known hypersensitivity to administration of ifosfamide. ( 4 ) • Urinary outflow obstruction. ( 4 )
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Medical Disclaimer
This drug information is for educational purposes only and should not replace professional medical advice. Drug information is sourced from the FDA National Drug Code Directory and Structured Product Labeling. Always consult with a healthcare provider before starting, stopping, or changing any medication.