synaptic pharmacology synaptic pharmacology synaptic pharmacology is the study of drugs that act on the synapses. it deals with the composition, uses, and effects of drugs that may enhance (receptor) or diminish (blocker) activity at the synapse, which is the junction across which a nerve impulse passes from an axon terminal to a neuron, muscle cell, or gland cell. a partial list of pharmacological agents that act at synapses follows. synaptic pharmacology channel, receptor, or phenomenonantagonist or blocker adenosinedcpgx, zm241385, anoxinine ampa-rnbqx ampa-r desensitizationcyclothiazide (ctz) cannabinoidam-251 gabaabicuculline, gabazine gababcgp-54626 glycinestrychnine kainate r.. metabotropic glur, broadmcpg, pertussis toxin, nem muscarinic achratropine, scopolamine nicotinic achrbungarotoxin, curare, dhbe nmda-rapv