Disease Areas

As a human health care company, we don’t base R&D decisions on the size of a potential market. Instead, we focus on areas of unmet medical need.

Neurology And Oncology Present Formidable Challenges

In fact, those challenges may be too daunting for some pharmaceutical companies. They may shy away from research into dementia and epilepsy. They may shun difficult cancers that don’t show a clear path to success. Solutions to such diseases may seem too hard to find. Too problematic to pursue.

We’re on a mission to overcome any and all obstacles to delivering breakthrough cures.

We will not stop until our mission is achieved.

Neurology

We’re Tackling Some of the Hardest-to-treat Neurological Conditions

Including Alzheimer’s disease and other forms of dementia, insomnia, narcolepsy, hypersomnia and more.

Find Out How We’re Breaking Through
Cross-section of a tumor under a microscope

A World Without Cancer: We’re Bringing It Closer Every Day

Eisai scientists are working to advance cancer therapeutics to benefit more patients and address more cancers, and we won’t stop pursuing breakthroughs until the world is cancer-free.

Discover What’s Next in Oncology