Eisai China Inc.

Nihon Eisai Co., Ltd.'s contraceptive suppository : Sampoon : , researched and developed during Japan's postwar baby boom, receives official approval from the Japanese government.

Nihon Eisai Co., Ltd. launches cardiotonic : Neophyllin : in Japan.

Nihon Eisai Co., Ltd. launches high-dosage vitamin B1 and B2 product : Chocola BB Tablets : in Japan.

Nihon Eisai Co., Ltd. launches motion sickness remedy : Travelmin : in Japan.

The company changes its name from Nihon Eisai Co., Ltd. to Eisai Co., Ltd., as it is known today.

Eisai rolls out its first three-year mid-term plan.

Eisai's Head Office building is completed in Tokyo.

Eisai opens its Taipei Office (now part of Eisai Taiwan Inc.), the company's first overseas branch, in Taiwan.

Eisai is publicly listed in the First Section of both the Tokyo and Osaka Stock Exchanges.

Gastrointestinal remedies : Saclon : and : Saclon Tablets : , recognizable for their distinct green hue even today, are launched in Japan.

Toyoji Naito receives the Japan Marketing Award, which recognizes people who have made a significant contribution to marketing and advertising in Japan.

The Tokyo Olympics take place.

The Kawashima Plant is completed in Gifu, central Japan.

Kawashima Plant opening ceremony.

Founder Toyoji Naito is appointed as chairman and Yuji Naito as company president. A three-tier representative director system is introduced: Chairman Toyoji Naito, President Yuji Naito, and Executive Vice President Tatsuo Naito.

Youda Co., Ltd. is established as a pharmaceutical imports subsidiary in Taiwan.

PT Eisai Indonesia is established as a pharmaceutical manufacturing and sales subsidiary in Indonesia.

Toyoji Naito resigns as representative director and chairman to assume director and honorary chairman roles.

Toyoji opens the Naito Museum of Pharmaceutical Science and Industry, Japan's first pharmaceutical museum, in Gifu.

The first oil crisis occurs due to conflict in the Middle East.

Eisai (Malaysia) Sdn. Bhd. and Hi-Eisai Pharmaceutical Inc. are established as pharmaceutical sales subsidiaries in Malaysia and the Philippines, respectively.

Metabolic cardiotonic : Neuquinon : is launched in Japan.

Naturally derived vitamin E product : Juvelux : is launched in Japan.

Eisai's founder Toyoji Naito passes away at age 89.

Peripheral neuropathy treatment : Methycobal : is launched in Japan.

Eisai Asia Regional Services Pte. Ltd. is established as a sales support and management services subsidiary in Singapore.

The second oil crisis erupts due to the Iranian Revolution.

The Beijing Representative Office is established in Beijing, China.

Shenyang Eisai Pharmaceutical Co., Ltd. is established as a Chinese–foreign contractual joint venture in pharmaceutical manufacturing and sales in Shenyang, China.

Eisai Suzhou Pharmaceutical Co., Ltd. is established as a pharmaceutical manufacturing and sales subsidiary in Jiangsu, China.