Drug Index


Mechanism :

Ceftriaxone is a semisynthetic, broad-spectrum cephalosporin antibiotic for intravenous or intramuscular administration. Cephalosporins are bactericidal because of their inhibition of cell-wall synthesis.

Indication :

  • Meningitis
  • Typhoid
  • Pneumonia
  • Otitis media
  • Pyelonephritis
  • Pelvic infections
  • Septicaemia
  • Gonococcal infections
  • Septicemia

Contraindications :

Ceftriaxone is contraindicated in patients with known allergy to the cephalosporin group of antibiotics.

Dosing :

50-100 mg/kg/day IV divided in 12 hourly doses for 7-14 days. Maximum dose: 4 g/day.
In meningitis use 100 mg/kg/day.

Adverse Effect :

Injection site inflammation, rash, pruritus, fever, eosinophilia, urticaria, anaphylaxis, colitis, diarrhea, nausea, and vomiting, pseudomembranous colitis.

Interaction :

Increased nephrotoxicity has been reported following concomitant administration of cephalosporins and aminoglycoside antibiotics.
Positive direct Coombs tests have been reported during treatment with the cephalosporin antibiotics.

Renal Dose :

Dose in Renal Impairment GFR (mL/min)
20-50Dose as in normal renal function
10-20Dose as in normal renal function
<10Dose as in normal renal function. Maximum 2 g daily

Dose in Patients undergoing Renal Replacement Therapies
CAPDNot dialysed. Dose as in GFR<10 mL/min
HDNot dialysed. Dose as in GFR<10 mL/min
HDF/High fluxUnknown dialysability. Dose as in GFR<10 mL/min
CAV/VVHDUnknown dialysability. 2 g every 12–24 hours
CVVHD/HDFLikely dialysability. 2 g every 12–24 hours

Hepatic Dose :

No dosage adjustments are recommended. Dose adjustment may be required with both hepatic dysfunction and significant renal impairment.
01/28/2024 17:29:11 Ceftriaxone
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