Printed on 2/13/2026
For informational purposes only. This is not medical advice.
This calculator estimates initial gentamicin dosing based on body weight and renal function. Extended-interval dosing (5–7 mg/kg q24–48h) is preferred for most indications. Traditional dosing (1.5–2 mg/kg q8–12h) may be used for specific infections. Always monitor drug levels.
Formula: Extended: 5 mg/kg IV, interval by CrCl (q24–48h). Traditional: 1.7 mg/kg IV q8–12h adjusted for renal function.
Disclaimer: This tool is for educational and informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider with questions about your health.
Calculate creatinine clearance (CrCl) using the Cockcroft-Gault equation. Used for renal drug dosing adjustments based on kidney function.
PharmacyDetermine the renal function stage and general dose adjustment guidance based on GFR.
ClinicalCalculate adjusted body weight for drug dosing in obese patients. Uses the Devine ideal body weight formula with a 0.4 correction factor.