| September 1876 |
Hangontan-yakusho (offices that sold pay-for-use medicines and managed and supervised sellers) disbanded due to the dissolution of domains, and Toyama Kokando was jointly founded by sellers of pay-for-use medicines |
| February 1894 |
Private Pharmaceutical School (presently Faculty of the Pharmaceutical Sciences, University of Toyama) established In order to train pay-for-use medicine sales staff |
| November 1914 |
Reorganized as corporation with 500,000 yen in capital |
| October 1936 |
Manmoshi Toyama Kokando established in Hoten and made the designated plant for Manchukuo |
| July 1939 |
Kokando Yakugaku Shounen Gakko founded |
| October 1944 |
Kokando Burma office established in Rangoon, Burma (presently Myanmar) |
| November 1944 |
3 companies – Godo Seiyaka, Toyama-ken Seiyaku, and Toyama-ken Yakuzai – merged with total capital of 1.905 million yen |
| February 1945 |
Became designated plant for Military No.1 Medical Supply Depot |
| April 1955 |
Kokando Yaku Gakuin founded |
| August 1959 |
Capital increased to 100 million yen |
| June 1960 |
Nihon Yakuzai Co., Ltd., founded |
| October 1962 |
Capital increased to 150 million yen |
| December 1970 |
Capital increased to 200 million yen |
| June 1975 |
Capital increased to 300 million yen |
| November 1996 |
Construction of new GMP plant launched |
| March 2002 |
Capital increased to 1.395 billion yen |
| September 2003 |
Namerikawa Plant constructed |
| October 2003 |
Kokando Medifuzu Co., Ltd., founded |
| April 2004 |
Kokando Yakuhin Hanbai Co., Ltd., founded |
| December 2004 |
Okinawa Kokando Co., Ltd., founded |
| April 2006 |
Yakuto Kokando Co., Ltd., founded |
| August 2006 |
Was ISO9001-2000 certified |
| January 2009 |
Capital increased to 2.145 billion yen |
| April 2010 |
Completed Kureha Plant |
| September 2011 |
Kokando Korea Co., Ltd. founded in Seoul, Republic of Korea |
| September 2011 |
Kokando (Thailand) Co., Ltd. founded |
| October 2012 |
Koushoku Co., Ltd. founded as a subsidiary of Nihon Yakuzai Co., Ltd. |
| March 2013 |
Kokando Hong Kong Co., Ltd. founded in Hong Kong |
| September 2013 |
Kokando Vietnam founded |
| June 2014 |
Kokando (Malaysia) Sdn. Bhd. and Kokando (Singapore) Pte. Ltd. founded |
| January 2015 |
Kokando and Kyoso Mirai Asia Pte. Ltd. established as a joint venture |
| April 2015 |
ZENO Co., Ltd. founded in sejong City, Republic of Korea |
| May 2015 |
Maruko Kyushu Yakuhin Hanbai Co., Ltd. liquidated |
| January 2016 |
Okinawa Kokando Co., Ltd. liquidated |
| August 2016 |
Kokando (Thailand) Co., Ltd. liquidated
|
| February 2017 |
Koshoku Co., Ltd. liquidated |
| April 2018 |
Toyama Megumi Seiyaku Co., Ltd. was jointly founded jointly with Naigai Yakuhin Co., Ltd. and Daikyo Yakuhin Kogyo Co., Ltd.
|
| October 2018 |
Kokando H&F Co., Ltd. founded |
| July 2020 |
Separation of Kokando Yakuhin Hanbai Co., Ltd. into Kokando Kawakami Yakuhin Group Co., Ltd. through an absorption-type split.
|
| December 2020 |
Separation of Tokiwa Co., Ltd. into Okinawa Kokando Co., Ltd. through an absorption-type split.
|
