Definition

1. Noun:
   • A sedative-hypnotic is a type of sedative drug that depresses (slows down) the activity of the central nervous system. Its primary effects are to reduce anxiety (sedative effect) and to induce sleep (hypnotic effect). The specific effect often depends on the dosage.

Usage

• The term sedative-hypnotic is used primarily in medical, pharmacological, and clinical contexts to classify and describe a category of psychoactive drugs.
• It functions as a countable noun (e.g., , ).

Examples

• Noun:
  • Benzodiazepines are a common class of sedative-hypnotic.
  • The doctor prescribed a sedative-hypnotic to help with her severe insomnia.
  • The effects of the sedative-hypnotic made the patient feel calm and drowsy.

Advanced Usage

• The term highlights the dual action of this drug class: lower doses typically produce a calming, anxiety-reducing (sedative) effect, while higher doses produce a sleep-inducing (hypnotic) effect.
• It is often used in contrast to other drug classes, such as stimulants or antipsychotics.

Variants and Related Words

• Sedative (noun/adjective): A substance that reduces excitement or anxiety. (A broader term; all sedative-hypnotics are sedatives, but not all sedatives are classified as sedative-hypnotics).
• Hypnotic (noun/adjective): A substance that induces sleep.
• Anxiolytic (noun/adjective): A drug that reduces anxiety. (Many sedative-hypnotics also have anxiolytic properties).
• Depressant (noun): A substance that reduces functional or nervous activity. (Sedative-hypnotics are a type of central nervous system depressant).

Synonyms

• Tranquilizer (specifically a , an older term)
• Sleeping pill (a common, non-technical term for hypnotic doses)
• Central nervous system (CNS) depressant

Related Phrases / Compound Terms

• Sedative-hypnotic drug: A more explicit, full form of the term.
• Sedative-hypnotic effect: Refers to the calming and sleep-inducing action of the drug.
• Sedative-hypnotic withdrawal: Symptoms that occur after stopping long-term use of such drugs.

Noun

1. a sedative that depresses activity of the central nervous system and reduces anxiety and induces sleep