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| 1931 | Start of business as a manufacturer of artificial color for pills. |
|---|---|
| 1940 | Establishment of NEIYAKU KAGAKU CO.,LTD. |
| 1948 | Application for registration of “Neiju” to the authority. (Registered on January 20, 1949) |
| 1953 | Start manufactruring of household exempt narcotic drug as a first manufacturer in Nara prefecture. |
| 1974 | Induction of Norihiro Tokui as President. |
| 1980 | Establishment of Company Credo. |
| 1985 | Establishment of Hope Pharmacy at Gose-shi, Nara. |
| 1992 | Start of import and distribution of Taurine. |
| 1999 | Start of import and distribution of D-Glucuronolactone. |
| 1999 | Completion of the building for sugar coating process. |
| 2001 | Start-up of Okuda manufactory. |
| 2002 | Start for export of drugs to Taiwan. |
| 2007 | Expansion of Packing line at head office west building. |
| 2010 | Expansion of Sugar coating process line at head office west building. |
| 2012 | Relocation of Hope Pharmacy to Yamatotakada-shi, Nara. |
| 2013 | Relocation and expansion of all the process lines to head office west building. |
