👉 Receptor math, also known as receptor kinetics or binding kinetics, is a branch of pharmacology that quantitatively describes how drugs interact with their target receptors. It involves mathematical models to understand the binding affinity (how strongly a drug binds to its receptor) and the rate at which this binding occurs and dissociates. Key parameters include the dissociation constant (Kd), which indicates the concentration of drug needed to occupy 50% of receptors, and the association rate constant (Ka), which measures how quickly a drug binds to the receptor. These models help predict drug efficacy, potency, and the time course of receptor occupancy, crucial for optimizing dosing regimens and understanding drug-receptor interactions in therapeutic contexts.