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Related Concept Videos

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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Sedatives and Hypnotics: Overview01:23

Sedatives and Hypnotics: Overview

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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...
347
Sedatives and Hypnotics Drugs: Benzodiazepines01:19

Sedatives and Hypnotics Drugs: Benzodiazepines

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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).
Benzodiazepines work by enhancing the effects of the inhibitory neurotransmitter GABA. They bind to the GABAA receptor, increasing its affinity for GABA, which opens chloride...
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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 Drugs: Barbiturates01:20

Sedatives and Hypnotics Drugs: Barbiturates

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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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The Placebo Effect01:54

The Placebo Effect

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The placebo effect occurs when people's expectations or beliefs influence or determine their experience in a given situation. In other words, simply expecting something to happen can actually make it happen.
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Related Experiment Video

Updated: Jun 25, 2025

A Computerized Test Battery to Study Pharmacodynamic Effects on the Central Nervous System of Cholinergic Drugs in Early Phase Drug Development
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Was thalidomide a placebo hypnotic?

Stewart Justman1

  • 1College of Humanities and Sciences, University of Montana, Missoula, MT, USA.

The Journal of the Royal College of Physicians of Edinburgh
|May 29, 2024
PubMed
Summary
This summary is machine-generated.

Thalidomide, a sedative, was found ineffective at 100mg for sleep, equivalent to placebo. Despite this, pregnant women were prescribed this dose, risking teratogenic effects for no benefit.

Keywords:
clinical trialefficacyharmplacebothalidomide

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Area of Science:

  • Pharmacology
  • Teratology
  • Clinical Trials

Background:

  • Thalidomide, a sedative-hypnotic, was widely prescribed despite causing severe birth defects like phocomelia.
  • Concerns regarding its safety and efficacy persisted even as it was used clinically.

Purpose of the Study:

  • To evaluate the efficacy of thalidomide as a sleep aid.
  • To compare different dosages of thalidomide against a placebo.

Main Methods:

  • A clinical trial conducted by Louis Lasagna in 1960 tested thalidomide against a placebo.
  • Dosages of 100mg and 200mg of thalidomide were administered and compared for sleep-inducing effects.

Main Results:

  • The 100mg dosage of thalidomide demonstrated no significant difference in sleep induction compared to placebo.
  • The 200mg dosage was found to be superior to both placebo and the 100mg dosage in producing sleep.

Conclusions:

  • The 100mg dose of thalidomide was ineffective as a sleep aid, offering no benefit over placebo.
  • Pregnant women prescribed 100mg thalidomide were exposed to teratogenic risks without therapeutic gain.