The imidazopyridines are a class of drugs defined by their chemical structure. They are generally GABAA receptor agonists, however recently proton pump inhibitors in this class have been developed as well. Despite usually being similar to them in effect, they are not chemically related to benzodiazepines. As such, GABAA agonizing imidazopyridines, pyrazolopyrimidines, and cyclopyrrones are sometimes grouped together referred to as "nonbenzodiazepines." Imidazopyridines include:
GABAA Receptor Agonists
Proton Pump Inhibitors
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| GABAA agonists/PAMs |
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| GABAB agonists |
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| H1 inverse agonists |
Antihistamines: Captodiame • Cyproheptadine • Diphenhydramine • Doxylamine • Hydroxyzine • Methapyrilene • Pheniramine • Promethazine • Propiomazine
Antidepressants: Tricyclic antidepressants ( Amitriptyline, Doxepin, Trimipramine, etc.) • Tetracyclic antidepressants ( Mianserin, Mirtazapine, etc.)
Antipsychotics: Typical antipsychotics ( Chlorpromazine, Thioridazine, etc.) • Atypical antipsychotics ( Olanzapine, Quetiapine, Risperidone, etc.)
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| α1-Adrenergic antagonists |
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| α2-Adrenergic agonists |
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| 5-HT2A antagonists |
Antidepressants: Serotonin antagonists and reuptake inhibitors ( Trazodone) • Tricyclic antidepressants ( Amitriptyline, Doxepin, Trimipramine, etc.) • Tetracyclic antidepressants ( Mianserin, Mirtazapine, etc.)
Antipsychotics: Typical antipsychotics ( Chlorpromazine, Thioridazine, etc.) • Atypical antipsychotics ( Olanzapine, Quetiapine, Risperidone, etc.)
Others: Eplivanserin • Niaprazine • Pruvanserin • Volinanserin
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| Melatonin agonists |
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| Orexin antagonists |
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| Others |
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