Free Tool · One-Compartment PK Model · 30+ Compounds
Select a compound or enter a stated half-life and schedule to view a one-compartment dose-decay estimate. The chart is a mathematical model, not a measured individual blood concentration or dose recommendation.
The calculator applies a simplified first-order elimination model to the entered half-life and schedule. Real absorption, formulation behavior, metabolism, and individual concentration can differ.
The iOS app logs injections and renders live estimated concentration curves for 44 compounds using citation-backed pharmacokinetic parameters — on-device, no account required.
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This calculator applies a simplified one-compartment, first-order elimination model to the half-life, amount, interval, and dose count entered. It illustrates a mathematical pattern; it does not measure blood concentration, absorption, effectiveness, or safety.
Use the compound database and public dataset to inspect source-level half-life statements and evidence labels before selecting a value.
No. It is a simplified estimate based on entered assumptions.
It is the model point where repeated-dose peaks and troughs approach a repeating mathematical pattern.
No. A consumer model cannot determine an appropriate dose or schedule.