This document discusses the simulation of pharmacokinetics using Stella software. It presents an experiment simulating different drug dosages administered to a patient weighing 150 pounds. The simulation shows that a dosage of 1000mg kept the drug concentration in the therapeutic range, while 2000mg caused toxic levels. Simulations are useful tools for teaching and learning as they provide interactive experiences and promote constructivist learning. However, they also have limitations like oversimplifying complex systems.