Eisai is a pharmaceutical subsidiary of Tokyo-based Eisai Company, is a research-based human health care organization that serves clients throughout the world. The company has been in operation since 1995 and markets products throughout the United States. With sales revenue of more than $3 billion, it serves patients and caregivers. The company works with health care professionals, hospitals and managed care organizations. The company markets products for the treatment of neurological and gastrointestinal disorders. It offers products under the ARICEPT, ACIPHEX, BANZEL, ZONEGRAN and FRAGMIN brands. The company s distributors include Caremark and Morris & Dickson Company.