A review of the literature regarding hypnotics including the<unk>  Z drugs concluded that these drugs carry a significant risk to the individual. The risks include dependence, accidents, and other adverse effects. Gradual discontinuation of hypnotics may lead to improved health without worsening of sleep. It is preferred that they should be prescribed for only a few days at the lowest effective dose and avoided wherever possible in the elderly.
Nonbenzodiazepine
Amphetamine type stimulant
Substituted tryptamine
Substituted amphetamine
Antipsychotic ester
Substituted phenethylamine
Heteroecious
Synthetic cannabinoids