Gentamicin Dosing Calculator

Specific gentamicin dosing calculator for extended-interval (once-daily) or traditional multiple-daily dosing, with Hartford and Urban-Craig nomogram support.

Dosing Method *

Extended interval (7 mg/kg q24-48h), traditional (1-1.7 mg/kg q8-12h), or synergy (1 mg/kg q8h for endocarditis)

Actual Body Weight *

Height *

inches

Sex *

Age *

years

Serum Creatinine *

mg/dL

Random Gentamicin Level

mcg/mL

For extended interval: draw 6-14 hours after start of first infusion

Hours Post-Start of Infusion

hours

Infection Type

Pneumonia may warrant higher dosing; UTI may use lower dosing

Enter values and click Calculate to see results.

References

Clinical Pharmacokinetics of Gentamicin in Various Patient Populations — PMC (2022). https://pmc.ncbi.nlm.nih.gov/articles/PMC9349143/
Predictive performance of gentamicin dosing nomograms — PMC (2014). https://pmc.ncbi.nlm.nih.gov/articles/PMC4140707/
Intravenous Gentamicin use in Adults (Hartford, 7mg/kg) — SAPG Scotland (2024). https://www.sapg.scot/media/4718/intravenous-gentamicin-use-in-adults-hartford.pdf
Stanford Health Care Aminoglycoside Dosing Guideline — Stanford Medicine (2024). https://med.stanford.edu/content/dam/sm/bugsanddrugs/documents/antimicrobial-dosing-protocols/SHC-Aminoglycoside-Dosing-Guide.pdf