Overview
11 DESCRIPTION SIVEXTRO (tedizolid phosphate), a phosphate prodrug, is converted to tedizolid in the presence of phosphatases. Tedizolid phosphate has the chemical name [(5 R )-(3-{3-Fluoro-4-[6-(2-methyl-2 H -tetrazol- 5-yl) pyridin-3-yl]phenyl}-2-oxooxazolidin- 5-yl]methyl hydrogen phosphate. Its empirical formula is C 17 H 16 FN 6 O 6 P and its molecular weight is 450.32.
Mechanism of Action
12 CLINICAL PHARMACOLOGY 12.1 Mechanism of Action Tedizolid is an antibacterial drug [see Microbiology (12.4) ] . 12.2 Pharmacodynamics The AUC/minimum inhibitory concentration (MIC) was shown to best correlate with tedizolid activity in animal infection models. In the mouse thigh infection model of S. aureus , antistaphylococcal killing activity was impacted by the presence of granulocytes. In granulocytopenic mice (neutrophil count 85%) occurs within 96 hours. Less than 3% of the tedizolid phosphate-administered dose is excreted in feces and urine as unchanged tedizolid.
Indications
- 1 INDICATIONS AND USAGE SIVEXTRO is an oxazolidinone antibacterial indicated for the treatment of acute bacterial skin and skin structure infections (ABSSSI) caused by designated susceptible microorganisms in adult and pediatric patients (at least 26 weeks gestational age and weighing at least 1 kg) ( 1.1 ) Usage to Reduce Development of Drug-Resistant Bacteria To reduce the development of drug-resistant bacteria and maintain the effectiveness of SIVEXTRO and other antibacterial drugs, SIVEXTRO should be used only to treat or prevent infections that are proven or strongly suspected to be...
Common Doses
- 200 mg
- 3 mg
- 6 mg
- 12 mg
Dosage
2 DOSAGE AND ADMINISTRATION Do not administer SIVEXTRO Tablets to pediatric patients weighing less than 35 kg. ( 2.1 ) Adult Patients Intravenous and Oral Dosage : 200 mg administered once daily orally or as an intravenous (IV) infusion over 1 hour for 6 days as specified in Table 1 in the full prescribing information. ( 2.2 ) Pediatric Patients Intravenous Dosage (at least 26 weeks gestational age and weighing at least 1 kg): Weight-based dosing as an intravenous infusion as specified in Table 2 in the full prescribing information. ( 2.
Contraindications
- 4 CONTRAINDICATIONS None. None ( 4 )
Side Effects
- 6 ADVERSE REACTIONS The following clinically significant adverse reactions are described elsewhere in the labeling: Serotonin Syndrome [see Warnings and Precautions (5.1) ] Clostridioides difficile -Associated Diarrhea [see Warnings and Precautions (5.3) ] The most common adverse reactions (≥2%) in adult patients are nausea, headache, diarrhea, infusion- or injection-related adverse reactions, vomiting, and dizziness. ( 6.1 ) The most common adverse reactions (>2%) in pediatric patients (12 years to less than 18 years of age) are phlebitis and increased hepatic transaminases. ( 6.
Interactions
- 7 DRUG INTERACTIONS SIVEXTRO (when administered orally) can increase the plasma concentrations of orally administered Breast Cancer Resistance Protein (BCRP) substrates. Monitor for adverse reactions related to the concomitant BCRP substrates if coadministration cannot be avoided. ( 7 , 12.3 ) SIVEXTRO has the potential for interaction with serotonergic agents. ( 5.1 , 7 ) 7.1 Membrane Transporters Orally administered SIVEXTRO inhibits Breast Cancer Resistance Protein (BCRP) in the intestine, which can increase the plasma concentrations of orally administered BCRP substrates, and the...