Gamma-aminobutyric acid receptor antagonist

This is indeed the case. In addition to gamma-aminobutyric acid (GABA), opiate and cholecystokinin receptor activities, the benzodiazepine scaffold is also found in muscle relaxants, antidepressants, neuroleptics, hypnotics, NK-1 receptor and vasopressin receptor antagonists, integrin antagonists, farnesyl transferase and phosphodiesterase inhibitors, potassium channel modulators, and others. 

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