Recommended Dosing for Sivextro in Skin Infections
Sivextro (tedizolid phosphate) treats acute bacterial skin and skin structure infections (ABSSSI) in adults and pediatric patients aged 12+ weighing at least 40 kg. The standard dose is 200 mg orally or intravenously once daily for 6 days.[1][2]
How to Administer It
Take the oral tablet with or without food. For IV use, infuse over 1 hour; do not administer as a bolus. No dose adjustments needed for renal or hepatic impairment.[1][2]
Dosing in Children
For patients 12+ years and ≥40 kg, use the adult dose: 200 mg once daily for 6 days. Weight-based dosing (4 mg/kg, max 200 mg) applies to younger or lighter kids, but ABSSSI approval focuses on the 12+ group.[1]
Why 6 Days Instead of Longer Courses?
Tedizolid's once-daily dosing and 6-day duration stem from its bacteriostatic activity against Gram-positive bacteria like MRSA, supported by phase 3 trials showing noninferiority to linezolid (a 10-day standard). Shorter therapy reduces resistance risk and side effects.[2][3]
Common Adjustments and Warnings
No black-box warnings specific to dosing. Monitor for QT prolongation or myelosuppression with extended use, though 6 days minimizes this. Avoid in kids under 12 or <40 kg without specialist input.[1]
How It Compares to Linezolid Dosing
Linezolid (Zyvox) for ABSSSI is 600 mg twice daily for 10-14 days, making Sivextro simpler with half the doses and shorter course.[2][3]
[1]: Sivextro Prescribing Information (Merck)
[2]: Drugs.com - Sivextro Dosing
[3]: Clinical Trials Summary (ESTABLISH-1/2)