Acetylcholine Agonist Black widow spider venom Muscarine Nicotine Antiacetylcholisterase organophosphates phsyostigmine neostgmine Antagonist Botulinus toxin Atropine Curare Snack Toxins Norepinephrin e catecholamine Agonist Phenlephrine Clondine Desipramine Amphetamine Impiramine MAO inhibitors Agonist Cocaine Amphetamine Bromocryptine L Dopa MAO inhibitors Agonist Fluoxetine Sertaline Fenfluramine LSD MDMA MAO inhibitors Impiramine Agonist Benzodiazepine Muscimol Agonist Dopamine catecholamine Serotonin indoleamine GABA aa NT Glycine aa NT Opioid Peptides peptides Agonist Enkephalins Substance P Acetylcholinesterase Antagonist Propanol Reserpine Antagonist Chlorproxamine thorazine Haloperidol Apopmorphine Reserpine Clozapine Antagonist PCPA Reserpine Antagonist Bicucline Antagonist Strychine Antagonist Naloxone