: Drugs that bind to a receptor but do not activate it, effectively blocking other molecules from binding.
Central to pharmacodynamics is the , which quantifies how the intensity of an effect changes with varying drug concentrations. This is typically visualized using a concentration-response curve. Key metrics include: Emaxcap E sub m a x end-sub : The maximal effect a drug can produce regardless of dose. EC50cap E cap C sub 50 pharmacodynamic
: Often involved in cell growth and metabolism. : Drugs that bind to a receptor but
: Drugs that bind to and activate a receptor, mimicking natural signaling molecules. Key metrics include: Emaxcap E sub m a
: Refers to how tightly a drug binds to its receptor, measured by the dissociation constant ( Kdcap K sub d ). A smaller Kdcap K sub d