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Table 1 Dosing schedule for Colistin and Polymyxin B

From: Comparison of nephrotoxicity of Colistin with Polymyxin B administered in currently recommended doses: a prospective study

Dosing schedule for Colistin in adults

Renal function

Loading dose

Maintenance dose

Normal renal function, or creatinine clearance > 50 ml/min

5 mg/kg (or 150,000 U/kg) IV over 40–60 min

2.5 mg/kg (or 75,000 U/kg) IV twice daily

Creatinine clearance 20–50 ml/min

2.5 mg/kg (or 75,000 U/kg) IV once daily

Creatinine clearance < 20 ml/min

2.5 mg/kg (or 75,000 U/kg) IV on alternate days

Patient on hemodialysis

Give additional dose of 50 mg (15,00,000 U) post dialysis

Note

1. Use ideal body weight for Colistin dosing, and not actual body weight

2. Maintenance doses are started 12 h after loading dose

Dosing schedule for Polymyxin B in adults

Loading dose: 2.5 mg/kg as 2 h IV infusion

Maintenance dose: 1.5 mg/kg as 1 h IV infusion, twice daily

Note

1. Use actual body weight for Polymyxin B dosing

2. Maintenance doses are started 12 h after loading dose

3. There is no dose modification in renal failure