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Sedatives and Hypnotics Drugs: Miscellaneous Agents01:17

Sedatives and Hypnotics Drugs: Miscellaneous Agents

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Sedatives and hypnotics encompass a wide range of substances, each with its unique mechanism of action, uses, and potential adverse effects.
Melatonin congeners like ramelteon (Rozerem) and tasimelteon (Hetlioz) selectively bind to melatonin receptors (MT1 and MT2) and thus mimic the actions of melatonin, a hormone that regulates sleep-wake cycles. Tasimelteon is primarily used for non-24-hour sleep-wake disorder, common in blind patients. They are also used to treat conditions like insomnia...
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Benzodiazepines have both sedative and hypnotic properties. They include compounds such as diazepam (Valium) and alprazolam (Xanax). Structurally, their cores are similar, consisting of the fusion of a benzene ring and a diazepine ring, but they share a common mechanism of action in the central nervous system (CNS).
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Management of Insomnia01:19

Management of Insomnia

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The sleep cycle, an integral part of human health, consists of several stages with distinct characteristics and functions. It begins with a transition from wakefulness to sleep, known as the light sleep phase, followed by the restorative deep sleep phase, essential for physical recovery and growth. The cycle concludes with the Rapid Eye Movement (REM) phase, characterized by high brain activity and vivid dreaming. Insomnia, a prevalent sleep disorder, involves difficulty falling asleep, staying...
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Sedatives and Hypnotics: Overview01:23

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Sedatives are drugs that alleviate anxiety, while hypnotics induce sleep. Both classes of medication suppress neuronal activity, leading to a calming effect for sedatives and facilitating sleep for hypnotics.
Sedative-hypnotics are categorized into barbiturates, benzodiazepines (BZDs), and non-benzodiazepines or Z-drugs. These drugs work by suppressing central nervous system activity, and this suppression is dose-dependent. Older sedative medications, like barbiturates, follow a linear curve in...
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CNS depressants include drugs from the category of barbiturates and benzodiazepines. They are valuable medications for managing anxiety disorders and insomnia. Barbiturates, once used to induce and maintain sleep, have been replaced mainly by benzodiazepines due to barbiturate's toxicity, tolerance, and overdose risks. They interact with GABAA receptors, leading to sedation at low doses and potentially coma and death at higher doses. Phenobarbital, a long-acting barbiturate, possesses...
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Sedatives and Hypnotics Drugs: Barbiturates01:20

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Sedatives and hypnotics encompass a drug class that acts on the central nervous system (CNS) to alleviate anxiety, promote relaxation and induce sleep.These drugs function by amplifying the actions of the neurotransmitter γ-aminobutyric acid (GABA), resulting in reduced neuronal activity. Barbiturates, a subset of sedatives and hypnotics first synthesized in the late 1800s, are categorized into ultra-short, short, intermediate, and long-acting groups based on their duration of effect. A...
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Related Experiment Video

Updated: Jan 19, 2026

Meta-Analysis of the Effectiveness and Safety of Shugan Jieyu Capsules for the Treatment of Insomnia
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Quetiapine is not a sleeping pill.

Karen Astrid Boldingh Debernard, Joachim Frost, Pål-Didrik Hoff Roland

    Tidsskrift for Den Norske Laegeforening : Tidsskrift for Praktisk Medicin, Ny Raekke
    |September 27, 2019
    PubMed
    Summary

    Quetiapine is widely used for sleep disorders, but its effectiveness is not well-documented. Low doses can cause significant side effects, warranting caution against its prescription for insomnia.

    Area of Science:

    • Pharmacology
    • Sleep Medicine
    • Psychiatry

    Background:

    • Quetiapine, an antipsychotic, is increasingly prescribed for sleep disorders in Norway.
    • The widespread use contrasts with limited evidence supporting its efficacy for insomnia.

    Purpose of the Study:

    • To evaluate the documented efficacy of quetiapine for sleep disorders.
    • To highlight potential risks associated with its use, even at low doses.

    Main Methods:

    • Review of existing literature on quetiapine's use in sleep disorders.
    • Analysis of reported side effects and efficacy data.

    Main Results:

    • Evidence for quetiapine's efficacy in treating sleep disorders is poorly documented.

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  • Even low therapeutic doses of quetiapine are associated with substantial adverse effects.

    • Conclusions:

    • Prescribing quetiapine for sleep disorders is not supported by robust evidence.
    • Clinicians should exercise caution due to potential side effects and lack of proven benefit.