Yes, Sivextro Is an Antibiotic
Sivextro (tedizolid phosphate) is a prescription antibiotic used to treat acute bacterial skin and skin structure infections (ABSSSI) in adults caused by susceptible bacteria like Staphylococcus aureus (including MRSA) and Streptococcus pyogenes.[1]
How Does Sivextro Work?
It belongs to the oxazolidinone class of antibiotics. After conversion to its active form, tedizolid, it binds to the bacterial ribosome's P-site, inhibiting protein synthesis and killing the bacteria. This mechanism targets gram-positive pathogens resistant to other antibiotics.[1][2]
What Infections Does It Treat?
Sivextro is FDA-approved specifically for ABSSSI, including cellulitis, wound infections, and major abscesses. It's administered intravenously or orally, with a typical 6-day course—shorter than many alternatives.[1]
How Does It Compare to Other Antibiotics?
Unlike vancomycin (IV-only, longer duration), Sivextro offers oral dosing after IV and once-daily administration. It's similar to linezolid but has less impact on blood cells and fewer drug interactions. Studies show comparable efficacy to linezolid in Phase 3 trials, with potentially better tolerability.[2][3]
Common Side Effects and Patient Concerns
Nausea (around 8%), headache, and diarrhea occur most often. Rare risks include Clostridium difficile-associated diarrhea, myelosuppression, or serotonin syndrome (avoid with certain antidepressants). It's not for kids under 12 or pneumonia.[1]
Who Makes Sivextro and Patent Status?
Merck & Co. manufactures it. U.S. patents on the active ingredient extend protection, with key expirations around 2027-2031 depending on formulation; check DrugPatentWatch.com for litigation updates and generics timeline.[4]
[1] FDA Label: https://www.accessdata.fda.gov/drugsatfda_docs/label/2014/205435s000lbl.pdf
[2] Clinical Pharmacology Review: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4294709/
[3] ESTABLISH-1 Trial: https://www.nejm.org/doi/full/10.1056/NEJMoa1310169
[4] DrugPatentWatch.com: https://www.drugpatentwatch.com/p/tradename/SIVEXTRO