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Other Disclosures4534Mochida Pharmaceutical Co.,Ltd.Pharmaceuticals

Notice Regarding the Initiation in Japan of a Phase III Clinical Trial of BON-001 for Nausea and Vomiting Associated with Pregnancy

Mochida Pharmaceutical began a Phase III clinical trial in Japan for BON-001, Duchesnay’s treatment for nausea and vomiting associated with pregnancy. Development toward obtaining marketing authorization in Japan has advanced to the next stage.

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Announced details

BON-001Bonjesta
Applicable field (uses covered by this announcement)

Treatment of nausea and vomiting associated with pregnancy

Contract DateDecember 2025
What the company reported numerically
Usage history

Approved and widely used in 45 countries worldwide

Relationship between the counterparty and the company
Mochida Pharmaceutical Co.,Ltd.4534
Relationship with the Company

Mochida Pharmaceutical entered into an agreement with Duchesnay in December 2025 covering development and sales in Japan.

CounterpartyDuchesnay Inc.

Headquartered in Quebec, Canada. A specialty pharmaceutical company focused on women’s health and a member of Duchesnay Pharmaceutical Group. President: Éric Gervais.

In this announcement the company addresses none of Contract Value / Offering price / Impact on Business Performance.

Source (materials cited by the company)

Japan Society of Obstetrics and Gynecology and Japan Association of Obstetricians and Gynecologists (eds.), Guidelines for Obstetrical Practice in Japan 2026

Announced details
ItemDetails
Names of Products / Services CoveredBON-001, Bonjesta
CounterpartyDuchesnay Inc.
Counterparty overviewHeadquartered in Quebec, Canada. A specialty pharmaceutical company focused on women’s health and a member of Duchesnay Pharmaceutical Group. President: Éric Gervais.
Relationship with the CompanyMochida Pharmaceutical entered into an agreement with Duchesnay in December 2025 covering development and sales in Japan.
Contract DateDecember 2025
Applicable areaTreatment of nausea and vomiting associated with pregnancy
Usage historyApproved and widely used in 45 countries worldwide
SourceJapan Society of Obstetrics and Gynecology and Japan Association of Obstetricians and Gynecologists (eds.), Guidelines for Obstetrical Practice in Japan 2026
Items this document does not state (10)
Contract ValueOffering priceLaunch dateAward/certification nameAwarding / certifying bodyRegistration number and expiry dateLocationLocation scaleQuantitative EffectsImpact on Business Performance

These are items the company does not state in this document. We do not leave them blank, nor fill them in from other sources or by inference.

The reasons the company gives

The company's own explanation, not something inferred from the numbers.

To verify the efficacy and confirm the safety of the product. The aim is also to address the drug loss of treatment options and provide a new treatment option for nausea and vomiting associated with pregnancy, for which no approved treatment is currently available in Japan.

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Notice Regarding the Initiation in Japan of a Phase III Clinical Trial of BON-001 for Nausea and Vomiting Associated with Pregnancy | Mochida Pharmaceutical Co.,Ltd. (4534) timely disclosure | Komori