Prodrug Activation Kinetics

A prodrug is an inactive form of a medicine, chemically masked so it absorbs or distributes better, that the body must first convert into the real, active drug before it works. This simulator renders that conversion as a population of individually-tracked 3D molecules: each prodrug particle has a per-timestep probability of being hydrolyzed into the active form, and each active-drug particle has its own probability of being cleared, exactly reproducing the sequential first-order kinetics — dP/dt = −k1P, dA/dt = k1P − k2A — that describe real prodrug pharmacokinetics such as enalapril→enalaprilat or valacyclovir→acyclovir. Adjustable hydrolysis and elimination rate constants, dose size and simulation speed let you explore activation-limited versus elimination-limited regimes while a live concentration-time chart and population readouts track the run.