ClinCalc Pro
Menu
Antibiotic (Glycopeptide) Pregnancy: C — use only if essential (crosses placenta, foetal ototoxicity risk)

Vancomycin

Brand names: Vancocin

Adult dose

Dose: AUC-guided dosing: target AUC/MIC 400–600. Loading dose 25–30mg/kg IV, then 15–20mg/kg every 8–12h
Route: IV (systemic) or Oral (C. difficile only)
Frequency: Every 8–12 hours (systemic). Oral C. difficile: 125mg QDS × 10 days
Traditional: 15mg/kg every 12h. AUC-guided dosing now preferred. Infuse over at least 60 min (red man syndrome risk with rapid infusion).

Paediatric dose

Dose: 15 mg/kg
Route: IV
Frequency: Every 6 hours
Max: 750mg per dose
Neonates: 10–15mg/kg every 12–24h (adjust based on gestational age). Children: 15mg/kg every 6h. TDM mandatory.
Paediatric weight-based calculator

Neonates: 10–15mg/kg every 12–24h (adjust based on gestational age). Children: 15mg/kg every 6h. TDM mandatory.

Clinical pearls

  • Red man syndrome (flushing, erythema, not allergy): slow infusion rate, premedicate with antihistamine
  • AUC/MIC-guided dosing now standard — reduces nephrotoxicity vs trough-only monitoring
  • Oral vancomycin NOT absorbed — used ONLY for Clostridium difficile (local gut action)
  • MRSA bacteraemia: vancomycin is gold standard. MIC creep is a concern — escalate to daptomycin if MIC ≥2 mg/L
  • Dose requires renal function (creatinine clearance) and ideal body weight calculations

Contraindications

  • Hypersensitivity to vancomycin

Side effects

  • Nephrotoxicity
  • Ototoxicity
  • Red man syndrome (rapid infusion — flushing, erythema)
  • Thrombophlebitis
  • Neutropenia (prolonged)

Interactions

  • Aminoglycosides, NSAIDs, loop diuretics — additive nephrotoxicity
  • Neuromuscular blocking agents — prolonged blockade

Monitoring

  • AUC-guided TDM (preferred) or trough levels (target 15–20 mg/L for serious infections)
  • Renal function (every 48–72h)
  • FBC (neutropenia)
  • Hearing (prolonged courses)

Reference: BNFc; ASHP/IDSA Vancomycin TDM Guidelines 2020; BNF. Verify against your local formulary and the latest BNF before prescribing.

Related

Curated clinical cross-links plus same-class fallbacks.