Simplified single-compartment model

Peptide Plotter

Add one panel per medication, set its half-life, dose, and frequency, and see an estimate of how much of each stays in your system over time — all on one graph.

Start date

Shared by every medication. Used to show real dates when you hover over the graph.

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Level in your system, by day

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Model: each day, the previous level of each medication decays by half every N half-life days (level = previous × 0.5^(1/half-life) + dose taken that day), simplified to instantaneous absorption and linear single-compartment decay, with each medication tracked independently. This is a planning aid, not a clinical pharmacokinetic prediction — actual absorption, distribution, and clearance vary by person and by drug.