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A 46-year-old member asked:

What happens if a certain poison/drug blocks the receptor site for a particular neurotransmitter, is it considered an agonist or an antagonist?

1 doctor answer4 doctors weighed in
Dr. Bennett Machanic
Neurology 53 years experience
Could be either: We have both excitatory neurotransmitters (such as glutamate, glycine), and many inhibitory neurotransmitters (norepinephrine, acetylcholine, dopamine, serotonin), and some agents can interfere by imbalancing the homeostasis. However, mechanistically, receptor blockers really cannot be considered in either category.

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