Otsuka Pharmaceutical Co., Ltd.

Pharmaceuticals
January 21, 2026

Otsuka and Towa Conclude Basic Agreement on the Succession and Manufacturing Outsourcing of Long Listed Products, Establishing a Collaborative Framework for Stable Supply

Otsuka Pharmaceutical Co., Ltd. (Otsuka) and Towa Pharmaceutical Co., Ltd. (Towa) are pleased to announce that the two companies have entered into an agreement to establish a strategic collaborative framework in pharmaceutical manufacturing.

Through this agreement, Otsuka and Towa aim to achieve a stable supply of pharmaceuticals by transferring and outsourcing the manufacture of certain pharmaceuticals owned by Otsuka, utilizing Otsuka's data in the development of Towa's generic drugs, and establishing a mutual backup manufacturing system.

The conclusion of this agreement is intended to address the recent social issue of unstable pharmaceutical supply and represents the Japanese pharmaceutical industry's initiative that transcends the boundaries between an originator pharmaceutical company and a generic drug manufacturer.

By establishing a collaborative framework based on the corporate philosophies of both companies, we will mutually leverage our respective strengths to further enhance the stable supply of pharmaceuticals and contribute to patient treatment.

About Towa Pharmaceutical
Guided by its corporate philosophy, "We contribute to people's health. We are dedicated to people's genuine smiles," Towa Pharmaceutical is engaged not only in its core generic drug business, but also in a wide range of health-related initiatives. These include efforts to support the maintenance of health and to restore pre-symptomatic conditions to a healthy state or prevent their progression. Through these initiatives, we aim to contribute to the extension of healthy life expectancy and to remain a company that is needed by society and local communities in every era. For more information, please visit our corporate website: https://www.towayakuhin.co.jp/english

About Otsuka

Otsuka Pharmaceutical Co., Ltd. is a total healthcare company that focuses on each individual's potential to enhance their well-being. Our medical-related business provides treatments and diagnostics for both physical and mental health. Our nutraceutical business supports daily health maintenance and improvement. Otsuka's unique products and services are based on scientific evidence, under the guidance of our corporate philosophy: Otsuka-people creating new products for better health worldwide. For further information, please visit www.otsuka.co.jp/en/