Agonist-To-Antagonist Spectrum of Action of Psychopharmacologic Agents Essay Assignment Paper

The Agonist-To-Antagonist Spectrum of Action of Psychopharmacologic Agents

Agonists are neurotransmitters that stimulate receptors while antagonists obstruct the action of neurotransmitters at its receptor. Drugs act in the same manner where some medications trigger receptors just like neurotransmitters and therefore such drugs are agonists. Other medications normally obstruct the action of neurotransmitter at its receptor and therefore such medications are known as antagonists (Stahl, 2013). In addition, other medications act on the contrary to agonists and are known as inverse agonists. Therefore, psychopharmacologic agents acting at the receptor occur within a spectrum from a complete agonist to antagonist and then to inverse agonist (Zimmer, 2016) Foundational Neuroscience. The spectrum involves agonists that open the ion channel entirely, while antagonists maintain the resting state, and finally, the inverse agonists close the ion channel (Stahl, 2013).

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