Pharmacodynamics Overview

The study of how drugs interact with the body to produce their effects.

The specific way a drug interacts with its target molecule in the body to elicit its effects.

A process by which a drug interacts with a receptor, producing a response, usually leading to a therapeutic or physiological effect.

A process by which a drug exerts its effect without directly interacting with a specific receptor.

The ability of a drug to bind to a receptor.

The ability of a drug to activate its target receptor and produce a response.

A drug that binds to a receptor and activates it, producing a response.

A drug that binds to a receptor and blocks its activation, preventing a response.

A drug that binds to a receptor and partially activates it, producing a weaker response compared to a full agonist.

An antagonist that binds to the same site as the agonist, preventing the agonist from binding and activating the receptor.

An antagonist that binds to a different site than the agonist, but still prevents the agonist from effectively activating the receptor.

A type of drug interaction where two drugs compete for the same receptor binding site.

A type of drug interaction where one drug binds to the receptor in a way that cannot be overcome by increasing agonist concentration.

A type of antagonist that binds to a receptor and blocks its activation by an agonist.

A type of antagonist that interacts chemically with the agonist, inactivating it and preventing it from reaching the receptor.

A type of antagonist that acts on a different pathway than the agonist, but ultimately produces a counteracting effect.

Drugs that coat and soothe irritated tissues, providing relief.

Drugs that absorb toxins, gases, or other substances in the body.

Drugs that reduce friction and facilitate the movement of substances within the body.

Drugs that neutralize acids, often used in the treatment of acid reflux or peptic ulcer disease.

A process in which a substance binds to a metal ion, rendering it inactive and allowing for easier excretion from the body.

Drugs that bind to metal ions and facilitate their removal from the body, often used in the treatment of metal poisoning.

The measure of the drug's concentration needed to produce a specific response.

A graphic representation of the relationship between drug dose and its effect, showing the range of responses from a minimal to maximal effect.

The maximum effect a drug can produce, regardless of the dose.

A term used to describe the ability of a drug to activate its target receptor and produce a response.