Chemical structure of the prototypical Z-drug zolpidem<unk> s (), sometimes referred to colloquially as Z-drugs (as many of them begin with the letter "z"), are a class of psychoactive drugs that are very benzodiazepine-like in nature. They are used in the treatment of sleep problems.<unk>  pharmacodynamics are almost entirely the same as benzodiazepine drugs and therefore exhibit similar benefits, side-effects, and risks. However,<unk> s have dissimilar or entirely different chemical structures and are therefore unrelated to benzodiazepines on a molecular level.
Nonbenzodiazepine
Amphetamine type stimulant
Substituted tryptamine
Substituted amphetamine
Antipsychotic ester
Substituted phenethylamine
Heteroecious
Synthetic cannabinoids