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Drug Maintenance Dose Calculator

Per-interval maintenance dose for a target Css.

Compute the per-interval maintenance dose required to keep a drug at a target steady-state concentration, given clearance, dosing interval, and bioavailability.

Priya Venkatesan By Priya Venkatesan
Reviewed by Dr. Helena Ortiz
Published Last reviewed 1 min read

Inputs

L/h
mg/L
h

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

Dose = (CL · Css · τ) / F

In depth

Compute the per-interval maintenance dose required to keep a drug at a target steady-state concentration, given clearance, dosing interval, and bioavailability.