Agonist Drug

Definition

An agonist drug is a substance that enhances or mimics the effects of a neurotransmitter, increasing its activity in the brain. It binds to the receptor sites of specific neurotransmitters and activates them, leading to an increase in their overall effect.

Related terms

Antagonist Drug: A substance that blocks or inhibits the effects of a neurotransmitter by binding to its receptor sites.

Reuptake Inhibitor: A type of antidepressant medication that prevents reuptake, allowing more neurotransmitters to remain in the synaptic gap.

Excitatory Neurotransmitter: A type of neurotransmitter that increases neuronal activity and triggers action potentials.