Linezolid 600 mg dose in adults?

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Accepted Answer

Usual adult dose: 600 mg every 12 hours (q12h), by IV infusion or orally.
Typical duration (depends on infection):
- Skin and soft tissue infections: commonly 7–14 days
- Pneumonia (CAP/HAP): commonly 7–14 days
- Longer courses (up to 4–6 weeks) may be used for more invasive infections (e.g., osteomyelitis, bacteremia) as directed by a clinician
Dosing in special patients:
- Renal impairment: no dose adjustment generally required
- Hepatic impairment: no formal adjustment needed, but monitor and use caution
Administration notes:
- IV infusion usually 30–120 minutes
- Switch to oral 600 mg every 12 hours as soon as feasible (oral bioavailability ~100%)
Safety and interactions:
- Linezolid has MAOI-like effects; avoid concomitant serotonergic medications (eg, SSRIs, SNRIs, TCAs, MAO inhibitors) to reduce risk of serotonin syndrome
- Monitor CBC (platelets, hemoglobin) if therapy >2 weeks due to risk of hematologic toxicity
- Be aware of peripheral/optic neuropathy and lactic acidosis with long courses
Always follow the specific dosing and duration prescribed by your clinician for the infection being treated. If you have a particular infection or patient context, I can tailor the info.

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