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- Protect Yourself From Heat Disorders
- Preventing Traveller's Thrombosis (Economy Class Syndrome)
- Menopause lab (Japanese)
- Living well with menopause
- PMS lab (Japanese)
- men-eki navi (website about "immunity", in Japanese only)
- AMP helps the renewal of skin cells (Japanese)
- Sleep Rhythm Lab (Japanese)
- The surprising facts about dietary fiber
- Everything You Need to Know about GI
- Jump start your brain with a well-balanced breakfast
- Vitamins & Minerals Q&A
- BCAA Helps Maintain Exercise Performance
- Smile Navigator: Schizophrenia (Japanese)
- Smile Navigator: Bipolar disorder (Japanese)
- Smile Navigator: Depression (Japanese)
- Smile Navigator: Pediatric autism spectrum disorder (Japanese)
- Zutsuu-nayami.jp (website about "headaches", in Japanese only)
- Parkinson's Disease
- Restless Legs Syndrome
- Gen-shu.jp ("reducing alcohol consumption", in Japanese only)
- Learn about Heart Failure, its Prevention, and Treatment
- ADPKD.JP (Japanese)
- PAD: Be Careful of Changes in Your Limbs
- Liver cirrhosis nutritional therapy
- Get Your Healthy Stomach Back
- Did You Know There Are Quick Tests for Infectious Diseases?
- Do You Have Symptoms of Dry Eye?
- Decoboco eye: All about eye health (Japanese)
- Atopeace (website about "atopic dermatitis", in Japanese only)
- Acne: Are You Doing Anything About It?
- Message from Top Management
- Our Leadership
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- Corporate Profile
- Otsuka People Talk
- Electronic Financial Disclosure (Japanese)
- Timeline of Otsuka's History
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- Virtual Factory Tour (Japanese)
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