In crisis or thinking about suicide? Call or text 988 in the US, available 24 hours a day. If someone is in immediate danger, call 911. Crisis resources

Medications

Suvorexant (Belsomra)

Suvorexant is a newer sleep medication, sold as Belsomra, that works by blocking the brain's wakefulness signal rather than sedating you. It's used for both falling and staying asleep.

Also known as: Belsomra

What the word means

Suvorexant is the drug. Belsomra is the brand.

It belongs to a newer group called orexin receptor antagonists, and the idea behind it is genuinely different from older sleeping pills. Orexin is a brain chemical that keeps you awake. Instead of pressing down on the brain to sedate it, the way benzodiazepines and Z-drugs do, suvorexant turns down the signal that’s holding you awake.

Whether that translates into a meaningfully better night’s sleep is a fair question, and it’s the kind of question that deserves the evidence rather than the marketing. It’s still a controlled substance, and it can cause next-day drowsiness.

Where to read the full guide

Shrinktionary defines the word.

Read the full suvorexant guide at PsychiatryRx, which covers how it works, side effects, and how it compares with zolpidem.

When to seek professional care

Take it only when you can give yourself a full night of sleep, and don’t drive the next day if you feel at all impaired. Tell your prescriber about vivid dreams, sleep paralysis, or any episode of being unable to move or speak while falling asleep or waking up, which this class can cause. For long-running insomnia, ask about CBT for insomnia. If you have thoughts of harming yourself, get help right away by calling 911, or call or text 988 in the US to reach the Suicide and Crisis Lifeline.

Related terms

Sources

  1. Suvorexant: MedlinePlus Drug Information , MedlinePlus (U.S. National Library of Medicine)
  2. Mental Health Medications , National Institute of Mental Health
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<blockquote>
  <p><strong>Suvorexant (Belsomra):</strong> Suvorexant is a newer sleep medication, sold as Belsomra, that works by blocking the brain's wakefulness signal rather than sedating you. It's used for both falling and staying asleep.</p>
  <p>&mdash; <a href="https://shrinktionary.com/terms/suvorexant/">Shrinktionary</a>, a plain-English mental health dictionary, medically reviewed by a board certified psychiatrist.</p>
</blockquote>

Cite (APA)

Refai, S. (2026). Suvorexant (Belsomra). Shrinktionary. https://shrinktionary.com/terms/suvorexant/

Cite (MLA)

"Suvorexant (Belsomra)." Shrinktionary, https://shrinktionary.com/terms/suvorexant/. Accessed July 25, 2026.

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