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Suvorexant for the treatment of insomnia.

Abstract
Suvorexant (Belsorma(®)) is the first orexin receptor antagonist approved by the US FDA (August 2014) for insomnia treatment. Following comprehensive Phase II/III studies, with up to 12 months of treatment in adult and elderly patients, there is little doubt that suvorexant induces and maintains sleep. However, the FDA and sponsor disagreed about effective versus safe doses (November 2012). The FDA considered that 5-15 mg were efficient and probably safe, whereas the sponsors had proposed 15-40 mg. The final approved doses are 5, 10, 15 and 20 mg. The major issues are next-morning somnolence and safety as seen in driving tests, with possible signs of muscle weakness, weird dreams, sleep walking, other nighttime behaviors and suicidal ideation. Despite its limitations, suvorexant's market entry offers a truly novel treatment for insomnia, paving the way for follow-up compounds and opening therapeutic avenues in other disorders for orexin receptor modulating compounds.
AuthorsLaura H Jacobson, Gabrielle E Callander, Daniel Hoyer
JournalExpert review of clinical pharmacology (Expert Rev Clin Pharmacol) Vol. 7 Issue 6 Pg. 711-30 (Nov 2014) ISSN: 1751-2441 [Electronic] England
PMID25318834 (Publication Type: Journal Article, Review)
Chemical References
  • Azepines
  • Hypnotics and Sedatives
  • Orexin Receptor Antagonists
  • Triazoles
  • suvorexant
Topics
  • Adult
  • Aged
  • Animals
  • Azepines (administration & dosage, pharmacology, therapeutic use)
  • Dose-Response Relationship, Drug
  • Drug Approval
  • Humans
  • Hypnotics and Sedatives (administration & dosage, pharmacology, therapeutic use)
  • Orexin Receptor Antagonists
  • Sleep Initiation and Maintenance Disorders (drug therapy)
  • Triazoles (administration & dosage, pharmacology, therapeutic use)
  • United States
  • United States Food and Drug Administration

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