💊 Oral Dosing Lab: Two-Compartment Pharmacokinetics, Accumulation and the Therapeutic Window

Take a pill every few hours and watch the drug move from gut to blood to tissue in a three-tank model. Plasma concentration, accumulation to steady state, a loading dose, a missed dose and the therapeutic window, with a panel of independent numerical checks (closed-form Bateman curve, AUC, mass balance, eigenvalue slope).