Towa Pharmaceutical Company was established at Higashi-ku, Osaka (currently known as Chuo-ku, Osaka) as a wholesale and brokerage of pharmaceutical raw materials.
1957
Towa Pharmaceutical Co., Ltd (abbreviated as Towa) was established and incorporated at Higashi-ku Osaka (currently known as Chuo-ku, Osaka). The Gamo Plant was constructed at Jyoto-ku, Osaka and production of OTC drugs began.
1964
Neyagawa Plant was constructed at Neyagawa, Osaka. Gamo Plant was closed and unified to Neyagawa Plant.
1965
Towa shifted to the manufacture and sale of ethical drugs.
1974
Towa moved its corporate headquarters to new office in Kadoma, Osaka.
1975
The Kadoma Plant was constructed at Kadoma, Osaka.
1978
The Osaka Plant was constructed at the headquarters site. Neyagawa Plant was unified to Osaka Plant and Kadoma Plant. Kadoma Laboratory was constructed at Kadoma, Osaka. Distribution Center was constructed at Kadoma, Osaka.
1982
Osaka Daini Plant was constructed at Kadoma, Osaka. Kadoma Laboratory enlarged to conform to GLP.
1983
The Okayama Plant was constructed at Shoo-cho, Katsuta-gun, Okayama.
1984
Towa acquired Beppu Hot Spring Science Institute Ltd., renamed it Oita Plant, and started manufacturing injections there.
1987
Kadoma Plant was closed and unified to Osaka Plant and Okayama Plant.
1994
Towa's shares were listed on the over-the-counter market of the Japan Securities Dealers Association.
1995
Distribution center was constructed in the Okayama Plant site.
1997
Towa moved its corporate headquarters to newly built office in Kadoma, Osaka.
1998
Osaka Research Center and Osaka Distribution Center were constructed at Kadoma, Osaka. Towa purchased Mect Co., Ltd.'s Tohoku Plant, re-opened it as Yamagata Daiichi Plant.
2003
Towa purchased J-Dolph Co., Ltd.（currently known as J-DOLPH Pharmaceutical CO., LTD.）, and made it a subsidiary.
2004
Towa's shares were listed on the second of Tokyo Stock Exchange (TSE).
2005
Towa's listing was transferred to the first section of the TSE.
2006
Osaka Daini Plant was closed and unified to the Osaka plant which was constructed at Kadoma, Japan.
2009
Oita Plant was closed and unified to the Okayama plant.
2010
Towa purchased Daichi Kasei Co., Ltd., and made it a subsidiary.
2012
Yamagata Plant was constructed at Kaminoyama, Yamagata. East Japan Distribution Center was constructed at Kaminoyama, Yamagata. West Japan Distribution Center was constructed at Shoo-cho, Katsuta-gun, Okayama. Osaka and Okayama Distribution Center were closed.
2014
Yamagata Daiichi Plant was closed.
2016
Established Greencaps Pharmaceutical Co., Ltd. JV with Sankyo Co., Ltd.
2017
East Japan Distribution Center was moved and constructed at Yamagata, Yamagata.
2018
Established T Square Solutions CO., LTD. JV with TIS Co., Ltd.
2020
Towa purchased Pensa Investments, S.L.（currently known as Towa Pharma International Holdings, S.L.）, and made it a subsidiary. Dissolved JV agreement with Sankyo Co., Ltd., and acquired all shares of Greencaps Pharmaceutical, making it a subsidiary.
2021
Towa purchased Protosera Inc. and made it a subsidiary.
2022
Towa purchased Susho Pharmaceutical Co., Ltd. and made it a subsidiary. Moved to the Prime section of the TSE due to the revision of the TSE's market classification.
2024
Towa purchased KAMATA Co., Ltd. and made it a subsidiary.
