Who We Are
Dr.JAPAN Co., Ltd. advances work on natural fish skin collagen and extracellular matrix (ECM), drawing on the clinical experience and research insights of Dr. Hikaru Ishii, MD, PhD, to support healthy longevity and beauty science.
For company details, leadership, location, and contact information, please see the company information below.
| Japanese name | Dr.JAPAN株式会社 （ドクタージャパン株式会社） |
|---|---|
| English name | Dr.JAPAN Co., Ltd. |
Team
Two physicians and one pharmaceutical executive
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Hikaru Ishii石井 光
- Certified Occupational Physician, Japan Medical Association
- Certified Gastroenterology Specialist, Japanese Society of Gastroenterology
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Akira Nishimura西村 章
- Former Director of Clinical Development, Takeda Pharmaceutical
- Executive Officer and Head of Clinical Development, Towa Pharmaceutical
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Reo Ishii石井 玲央
- Graduated from Nihon University
- Physician, Nihon University Itabashi Hospital
Company Overview
| Company Name | Dr.JAPAN Co., Ltd. |
|---|---|
| Chairman & Representative Director | Hikaru Ishii |
| Representative Director | Leo Ishii |
| Established | July 2024 |
| Address | 1-16-21-204 Takadanobaba, Shinjuku-ku, Tokyo, Japan |
| TEL | +81-3-3209-0707 (Mon–Fri 10:00–16:00, excl. holidays) |
Research and Development
Dr.JAPAN explores the relationship between healthy longevity, beauty science, extracellular matrix (ECM), and natural fish skin collagen. Our work includes clinical research and food product development.
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Fish Skin Collagen
Clinical Study Human clinical research using natural fish skin collagen. -
NK Cell Therapy Clinical Study
Cancer immunotherapy research through NK cell activation, built on 17 years and 634 cases.
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Healthy Longevity
Extending the years of independent living, from the perspective of ECM.
Research findings do not indicate the effects or efficacy of any product.
Dr.DECOLLA and Crowdfunding
Dr.DECOLLA is a food product containing collagen, developed by Dr.JAPAN. Visit the product page for its name, ingredients, package contents, and other information.
Dr.DECOLLA and
Crowdfunding
A food product containing collagen, developed by Dr.JAPAN.
Contact
Please use our contact page for inquiries about research, products, or availability.