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Osemozotan

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Drug Profile

Osemozotan

Alternative Names: MKC-242; MN-305

Latest Information Update: 11 Dec 2025

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At a glance

  • Originator Mitsubishi Pharma Corporation
  • Developer Tanabe Pharma Corporation
  • Class Antidepressants; Anxiolytics; Irritable bowel syndrome therapies; Small molecules
  • Mechanism of Action 5-HT1A serotonin receptor agonists
  • Orphan Drug Status

    Orphan designation is assigned by a regulatory body to encourage companies to develop drugs for rare diseases.

    No
  • New Molecular Entity Yes

Highest Development Phases

  • Suspended Anxiety disorders; Generalised anxiety disorder; Insomnia; Irritable bowel syndrome; Major depressive disorder

Most Recent Events

  • 01 Dec 2025 Mitsubishi Tanabe Pharma Corporation is now called Tanabe Pharma Corporation
  • 08 May 2014 Osemozotan is no longer licensed to MediciNova (http://www.mt-pharma.co.jp/e/develop/pipeline/e_pipeline1403.pdf)
  • 08 May 2014 Suspended - Phase-II for Anxiety disorders in Japan (PO)

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