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Sedatives and Hypnotics Drugs: Miscellaneous Agents01:17

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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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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 Drugs: Benzodiazepines01:19

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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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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.
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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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Benzodiazepines are a class of anxiolytic drugs known for their rapid efficacy and high therapeutic-to-lethal dose ratio, but with a potential risk of drug dependence. These drugs are lipophilic, allowing for rapid absorption after oral administration, eventually reaching the central nervous system (CNS). Once in the CNS, benzodiazepines bind to the allosteric site of the GABAA receptor. This binding enhances the inhibitory effects of the neurotransmitter GABA. By doing so, they prevent...
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Zolpidem: Efficacy and Side Effects for Insomnia.

Amber N Edinoff1, Natalie Wu1, Yahya T Ghaffar1

  • 1Louisiana State University Health Shreveport.

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PubMed
Summary

Zolpidem effectively treats insomnia alongside cognitive-behavioral therapy but carries risks like falls, CNS issues, and complex sleep behaviors. Dosage adjustments are crucial for elderly patients, and prescription decisions require careful risk-benefit assessment.

Keywords:
adverse effectsinsomniaz-drugszolpidem

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Area of Science:

  • Pharmacology
  • Sleep Medicine
  • Neurology

Background:

  • Insomnia is a prevalent sleep disorder characterized by difficulty initiating/maintaining sleep, leading to daytime impairment and reduced quality of life.
  • Treatment often involves a multidisciplinary approach, including behavioral interventions, sleep hygiene, and pharmacotherapy.
  • Non-benzodiazepine hypnotics, such as zolpidem, are commonly used as adjunctive treatments for insomnia.

Purpose of the Study:

  • To review the efficacy and adverse effects of zolpidem in insomnia treatment.
  • To highlight special considerations and risks associated with zolpidem use.
  • To inform clinical decision-making regarding zolpidem prescription.

Main Methods:

  • Literature review of studies on zolpidem's efficacy and adverse drug reactions (ADRs).
  • Analysis of data on zolpidem-associated risks, including falls, fractures, CNS effects, and complex sleep-related behaviors.
  • Examination of withdrawal effects, pharmacokinetic differences (e.g., in women), and fetal development outcomes.

Main Results:

  • Zolpidem is associated with increased risks of falls (OR 4.28) and hip fractures (RR 1.92) in patients.
  • Central nervous system (CNS) related ADRs, such as confusion and dizziness, are common, particularly in older adults.
  • Complex sleep behaviors, increased suicidality, and adverse fetal development outcomes (low birth weight, preterm delivery) have been reported.

Conclusions:

  • Zolpidem can be an effective treatment for insomnia when used with cognitive-behavioral therapy, but requires careful dosing, especially in the elderly.
  • Despite potential risks, zolpidem may offer advantages over other hypnotics regarding residual daytime sleepiness and fall risk.
  • Prescribing decisions should be individualized, weighing the benefits against the significant psychical and psychiatric risks.