Oxalid

Patients who commence treatment on the parenteral formulation may be switched to oral presentation when clinically indicated. In such circumstances, no dose adjustment is required as Linezolid has an oral bioavailability of approximately 100%. The injection should be administered over a period of 30 to 120 minutes. The film-coated tablets or oral suspension may be taken with or without food.

Complicated skin and skin structure infections, Community-acquired pneumonia, including concurrent bacteremia-

• Pediatric Patients (Birth through 11 Years of Age): 10 mg/kg IV or oral t.i.d.
• Adults and Adolescents (12 Years and Older): 600 mg IV or oral b.i.d.
• Recommended Duration of Treatment (consecutive days): 10 to 14

Nosocomial pneumonia, Vancomycin-resistant Enterococcus faecium infections including concurrent bacteremia-

• Pediatric Patients (Birth through 11 Years of Age): 10 mg/kg IV or oral t.i.d.
• Adults and Adolescents (12 Years and Older): 600 mg IV or oral b.i.d.
• Recommended Duration of Treatment (consecutive days): 14 to 28

Uncomplicated skin and skin structure infections-

• Pediatric Patients (Birth through 11 Years of Age): <5 yrs: 10 mg/kg oral t.i.d. 5-11 yrs: 10 mg/kg oral b.i.d
• Adults and Adolescents (12 Years and Older): Adults: 400 mg oral b.i.d. Adolescents: 600 mg oral b.i.d
• Recommended Duration of Treatment (consecutive days): 10 to 14

Neonates <7 days: Most pre-term neonates <7 days of age (gestational age <34 weeks) have lower systemic Linezolid clearance values and larger AUC values than many full-term neonates and older infants. These neonates should be initiated with a dosing regimen of 10 mg/kg every 12 hours. Consideration may be given to the use of 10 mg/kg in every eight hours regimen in neonates with a sub-optimal clinical response. All neonatal patients should receive 10 mg/kg t.i.d. by 7 days of life.

Most of the adverse events reported with Linezolid were mild to moderate in intensity. The most common adverse events in patients treated with Linezolid were diarrhea, headache and nausea. Other adverse events includes oral moniliasis, vaginal moniliasis, hypertension, dyspepsia, localized abdominal pain, pruritus, and tongue discoloration.

No cases of overdose have been reported. Symptomatic and supportive care is advised together with maintenance of glomerular filtration. Approximately 30% of a Linezolid dose is removed during 3 hours of haemodialysis. No data are available for the removal of Linezolid by peritoneal dialysis or haemoperfusion.

Linezolid is a synthetic, antibacterial agent belonging to a new class of antibiotics, the oxazolidinones, with in vitro activity against Gram positive aerobic bacteria, some Gram positive anaerobic bacteria and certain Gram negative bacteria. It selectively inhibits bacterial protein synthesis via a mechanism of action different from that of other antibacterial agents. Linezolid binds to the 23S ribosomal RNA of the 50S subunit of the bacterial ribosome and prevents the formation of a functional 70S initiation complex which is an essential component of the bacterial translation process. The results of time-kill studies have shown Linezolid to be bacteriostatic against enterococci and staphylococci. For streptococci, Linezolid was found to be bactericidal for the majority of strains.

Patients who develop recurrent nausea or vomiting, unexplained acidosis or low bicarbonate level while receiving Linezolid should receive immediate medical evaluation. Where administration of Linezolid and concomitant serotonergic agents are clinically appropriate, patients should be closely observed for signs and symptoms of serotonin syndrome such as cognitive dysfunction, hyperpyrexia, hyperreflexia and incoordination. If signs or symptoms occur, physicians should consider discontinuation of either one or both agents. If the concomitant serotonergic agent is withdrawn, discontinuation symptoms can be observed. If patients experience symptoms of visual impairment, such as changes in visual acuity, changes in color vision, blurred vision or visual field defect, prompt ophthalmic evaluation is recommended. Convulsions have been reported in patients when treated with Linezolid. In some of these cases, a history of seizures or risk factors for seizures was reported.

Macrolides