EISAI RECEIVES APPROVAL FOR ADDITIONAL INDICATION OF ANTI-ARRHYTHMIC AGENT TAMBOCOR® TABLETS FOR TACHYARRHYTHMIA IN PEDIATRIC PATIENTS IN JAPAN

Eisai Co., Ltd. (Headquarters: Tokyo, President & CEO: Haruo Naito, “Eisai”) announced today that the Company has received approval of an additional indication of anti-arrhythmic agent Tambocor® 50mg Tablets and Tambocor® 100mg Tablets (generic name:flecainide acetate) for the treatment of tachyarrhythmia (paroxysmal atrial fibrillation/flutter, paroxysmal superventricular tachycardia, ventricular tachycardia) in pediatric patients in Japan.

Pediatric arrhythmia not only causes heart palpitations, dizziness, shortness of breath and other symptoms that impact the daily lives of patients, it is also said to be one of the most common causes of sudden death among children. As there are currently few anti-arrhythmic agents with limited indications approved for pediatric use in Japan, arrhythmia has represented an area of unmet medical need in the pediatric care.

With Tambocor® already approved for the treatment of tachyarrhythmia in children in the United States, and its clinical usefulness widely reported in medical literature, the Japanese Ministry of Health, Labour and Welfare's Council for Pediatric Pharmacotherapy determined the need to make the drug available to treat pediatric patients in Japan. Tambocor Tablets will provide a new drug treatment option to those patients who due to age or body size have difficulty using catheter treatments or who do not respond to currently marketed anti-arrhythmic drugs. Furthermore, Tambocor® will be the first drug in Japan to be indicated for the treatment of ventricular tachycardia in pediatric patients.

Tambocor® Tablets suppress tachyarrythmia by blocking cardiac sodium channels and slowing down cardiac conduction. Approved and launched in Japan in 1991, the drug has up until now been indicated for the treatment of tachyarrythmia in adults.

By offering Tambocor® Tablets as a new treatment option, Eisai will now be able to provide pediatric patients with tachyarrythmia with an appropriate new drug therapy and will continue to make further contributions to address their needs.

1. About Tambocor® Tablets (underlined parts indicate newly added information)

1) Product Name
Tambocor® Tablets 50mg, Tambocor® Tablets 100mg