Overview
11 DESCRIPTION REZZAYO (rezafungin for injection), for intravenous use is a sterile solid (cake or powder) that contains rezafungin acetate. Rezafungin acetate is a semisynthetic lipopeptide synthesized from a fermentation product of Aspergillus nidulans . REZZAYO is an echinocandin, a class of antifungal drugs that inhibits the synthesis of 1,3-β-D-glucan, an essential component of fungal cell...
Mechanism of Action
12 CLINICAL PHARMACOLOGY 12.1 Mechanism of Action Rezafungin is an echinocandin antifungal drug [see Microbiology ( 12.4 )] . 12.2 Pharmacodynamics Rezafungin exposures achieved with the recommended dosage regimen appear to be on the plateau of the observed flat exposure-efficacy response curve in clinical studies. Cardiac Electrophysiology Rezafungin does not prolong the QTc interval to any clinically relevant extent at a dose 3.5 times the maximum approved recommended loading dose. 12.3 Pharmacokinetics Following single and multiple dosing, the C max and AUC of rezafungin increase in a dose-proportional manner over a dose range of 50 mg (0.125 times the approved maximum recommended loading dose) to 400 mg.
Indications
- 1 INDICATIONS AND USAGE REZZAYO is an echinocandin antifungal indicated in patients 18 years of age or older who have limited or no alternative options for the treatment of candidemia and invasive candidiasis. Approval of this indication is based on limited clinical safety and efficacy data for REZZAYO. ( 1 , 12.4 , 14 ) Limitations of Use REZZAYO has not been studied in patients with endocarditis, osteomyelitis, and meningitis due to Candida. ( 1 ) 1.
Common Doses
- 400 mg
- 200 mg
- 9.5 mL
- 20 mg
Dosage
2 DOSAGE AND ADMINISTRATION Administer the recommended dosage of REZZAYO once weekly by intravenous (IV) infusion, with an initial 400 mg loading dose, followed by a 200 mg dose once weekly thereafter. The safety of REZZAYO has not been established beyond 4 weekly doses. ( 2.1 ) See full prescribing information for reconstitution, dilution, and administration instructions. ( 2.2 , 2.3 , 2.4 ) 2.1 Recommended Dosage Administer the recommended dosage of REZZAYO once weekly by intravenous (IV) infusion, with an initial 400 mg loading dose, followed by a 200 mg dose once weekly thereafter.
Contraindications
- 4 CONTRAINDICATIONS REZZAYO is contraindicated in patients with known hypersensitivity to rezafungin or other echinocandins. Known hypersensitivity to rezafungin or other echinocandins. ( 4 )
Side Effects
- 6 ADVERSE REACTIONS The following clinically significant adverse reactions are described elsewhere in the labeling: Hypersensitivity Reactions, including Anaphylaxis [see Warnings and Precautions ( 5.1 )] Infusion-related Reactions [see Warnings and Precautions ( 5.2 )] Hepatic Adverse Reactions [see Warnings and Precautions ( 5.4 )] Most common adverse reactions (incidence ≥ 5%) are hypokalemia, pyrexia, diarrhea, anemia, vomiting, nausea, hypomagnesemia, abdominal pain, constipation, and hypophosphatemia.
Interactions
- No major interactions listed on the FDA label. Always consult a healthcare professional.