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Zolpidem (sold under the brand names Ambien, Ambien CR, Stilnox, and Sublinox) is a prescription medication used for the treatment of insomnia, as well as some brain disorders. It is a short-acting nonbenzodiazepine hypnotic of the imidazopyridine class that potentiates gamma-aminobutyric acid (GABA), an inhibitory neurotransmitter, by binding to GABAA receptors at the same location as benzodiazepines. It works quickly (usually within 15 minutes) and has a short half-life (two to three hours). Zolpidem has not adequately demonstrated effectiveness in maintaining sleep (unless delivered in a controlled-release form); however, it is effective in initiating sleep. Some users take zolpidem recreationally for these side effects. However, it may be less common than benzodiazepine abuse. Zolpidem can become addictive if taken for extended periods of time, due to dependence on its ability to put one to sleep or to the euphoria it can sometimes produce.

Alcaftadine is only found in individuals that have used or taken this drug. It is a H1 histamine receptor antagonist indicated for the prevention of itching associated with allergic conjunctivitis. This drug was approved in July 2010.Alcaftadine is a H1 histamine receptor antagonist and inhibitor of the release of histamine from mast cells. Decreased chemotaxis and inhibition of eosinophil activation has also been demonstrated.

Talastine is a first-generation alkylamine H1-antihistamine.

4-[(7-methyl-2-phenyl-3-imidazo[1,2-a]pyridinyl)methyl]morpholine is a member of imidazoles.