Observed arrival · 2026-10-01
FocusBits’ theoretical stimulant-kinetics simulator
An interactive educational model plots theoretical concentration-time curves for several methylphenidate formulations and lisdexamfetamine-to-amphetamine conversion.
- For
- Learners exploring theoretical pharmacokinetic curves
- Worth noticing
- LDX is modeled as absorption, first-order conversion to d-amphetamine, then separate elimination; the page warns that clinical variability is omitted.
Field notes
The interface starts with a blank curve and asks users to add a medication or choose a quick-start profile. Inputs include bioavailability, volume of distribution or weight-scaled Vd, dose, timing, uptake shape, transit time, and elimination half-life; users can overlay total curves and export. The page explicitly excludes pharmacodynamic effects and says its deterministic model omits variability and clinical factors, so its outputs are conceptual rather than dosing guidance.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
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