Saishunkan Pharmaceutical Collaborates with ZIPAIR Tokyo to Test Sell "Medicinal Soup Porridge" on International Flights

Saishunkan Pharmaceutical Co., Ltd. (Headquarters: Mashiki-machi, Kamimashiki-gun, Kumamoto Prefecture; Representative Director and President: Masaaki Nishikawa; hereinafter "Saishunkan Pharmaceutical") has launched a collaborative project with ZIPAIR Tokyo Inc. (a wholly-owned subsidiary of JAL; hereinafter "ZIPAIR") as part of its Kampo-inspired lifestyle brand "Positive Rhythm" business. This project commenced the test sale of 'Body-Friendly Medicinal Soup Porridge' as an in-flight meal on April 1, 2026, aiming to alleviate "jet lag" caused by long-haul flights.

This project is positioned as "the first step towards a cultural creation business" that proposes a new habit of "self-care conscious of bio-rhythms."

Project Background: A New Travel Habit for Time Zone Changes, Focusing on Bio-rhythms

Flights across time zones are demanding environments where daily life rhythms temporarily change. In this project, based on the knowledge of chrononutrition, we will provide "meals focused on bio-rhythms" to help customers maintain their own rhythm even in-flight and start their journey comfortably.

Uniqueness and Value of This Project: Value as a "Self-Care Habit" Recognized by Aviation Professionals

In this collaboration, Saishunkan Pharmaceutical's Kampo knowledge is combined with chrononutrition to propose a new solution: "meals that align with bio-rhythms." A tasting survey conducted with cabin crew members also received high empathy for its value, with comments such as "warming the body led to refreshment during irregular flights."

【Feedback from ZIPAIR Cabin Crew (excerpt)】

・"After the flight, I felt more refreshed than usual. I was able to relax and calm my mind and body." (Female, 30s)

・"The ginger flavor was a nice accent, and the warm soup permeated my body. It's easy to eat even when tired and lacking appetite." (Female, 20s)

・"It's easy to feel cold in the cabin, so warm porridge is very reassuring. I think customer demand will also increase." (Female, 30s)

【Overview】

● Product Offered: 'Body-Friendly Medicinal Soup Porridge,' developed for bio-rhythm care, focusing on the social issue of social jet lag, will be included in in-flight meals for rhythm care on flights involving time differences.

● Routes Offered: All routes

● Test Sales Overview: From April 1, 2026, a limited sale of 2000 servings will be conducted on ZIPAIR's international flights.

※Reference※

'Body-Friendly Medicinal Soup Porridge' 4-variety assortment

For those mornings after a holiday when your rhythm is off and you feel a bit sluggish. Why not soothe your mind and body with a warm "Medicinal Soup Porridge"? This warm bowl will support a healthy start to your week, true to yourself.

https://www.saishunkan.co.jp/lashiku/yakuzengayu/index.html

Future Development: "Bio-rhythm Care" as a New Global Health Habit

This project aims to create a "new wellness habit" in Japan that goes beyond merely providing in-flight meals. By using the experience of "being conscious of one's bio-rhythm in the sky" as an entry point, the company intends to widely advocate a culture of self-care to regulate daily rhythms in modern society, where irregular lifestyles are common.

Based on the results of this test sale, we will proceed with considerations for full-scale implementation. In the future, we plan to develop this into a "bio-rhythm care service" that supports everyone suffering from jet lag, including linkage with the Kampo-inspired personal rhythm diagnosis service "My Rhythm Check" (https://my-rhythm.saishunkan.co.jp/) and the provision of Japanese and Chinese herbal teas based on diagnosis results. Through collaboration with ZIPAIR, we aim to foster new touchpoints with general consumers and, as a pioneer in "bio-rhythm care" that draws out the human body's inherent "self-healing power," establish a "new health habit" that creates a healthy tomorrow for people in Japan and around the world.

【About Positive Rhythm】

This brand is one of the four businesses outlined in the "Positive Age Company Declaration," a new guideline looking ahead to the company's 100th anniversary, and forms the core of the business that supports "a healthy tomorrow" through physical and mental well-being. It has been enhanced by adding a stronger approach to the Kampo philosophy that "humans are part of nature" and an idea of re-evaluating "food, bathing, etc., from a new perspective" to the unique design of the former "Lashiku" brand, which offered "Kampo-inspired lifestyle products for modern living" focusing on "bio-rhythms." It proposes products and services that optimize bio-rhythms by combining switches that regulate daily "activity (ON) / rest (OFF)" (autonomic nerves / clock synchronization / core body temperature) with rhythms that affect humans (circadian rhythm / circaseptan rhythm / seasonal rhythm). (https://www.saishunkan.co.jp/positive/)

【About Saishunkan Pharmaceutical】

Founded in Kumamoto in 1932, Saishunkan Pharmaceutical is a "Kampo pharmaceutical company" that manufactures and sells Kampo-based pharmaceuticals, quasi-drugs, and cosmetics, including "Tsusanto" and "Domohorn Wrinkle." Its manufacturing philosophy is characterized by maximizing the potential of carefully selected raw materials, inspired by the Kampo concept that "humans are part of nature," and utilizing the robust vitality of the natural world for human benefit. Under the corporate philosophy of "Connecting with nature, connecting with people for tomorrow," aiming for "a cycle of nature, people, and society," the company pursues the practical application of its philosophy from multiple perspectives, including sustainability activities as a "return" for the blessings received from nature, and reconstruction support for Mashiki-machi, Kumamoto Prefecture, where its headquarters are located, through its self-operated "hometown tax donation site." Towards its 100th anniversary in 2032, the company announced the "Positive Age Company Declaration," embodying its will to "create a daily life where tomorrow is something to look forward to." It is currently promoting a medium-to-long-term business plan to continuously offer highly unique "Kampo-inspired solutions" to "customers, employees and their families, collaborators, local communities, and the Earth." (https://www.saishunkan.co.jp/)