What exactly is the difference between Agonist and Antagonist?
An agonist is a drug that binds to and activates a receptor to mimic the activity of a signal ligand. An antagonist, on the other hand, is a medicine that binds to a receptor without activating it, but reduces the receptor’s ability to be triggered by other agonists.
An agonist is a drug that stimulates certain brain receptors. Full agonist opioids completely activate the opioid receptors in the brain, producing the full opioid impact.
Antagonist is the opposite of agonist. An antagonist is a drug that binds to the receptor either at the main location or at another site, preventing the receptor from responding. Antagonist is the polar opposite of agonist. Opioid antagonists prevent opioids from acting in the brain.
Full and partial agonists: