| 1897 | 
Dainippon Pharmaceutical Co., Ltd., established on May 14.Twenty-one prominent leaders in the pharmaceutical industry in Doshomachi, Osaka, founded Osaka Pharmaceuticals Co., Ltd. | 
| 1898 | 
Pharmaceutical Plant (former Osaka Plant and former Osaka Center) established in Ebie, Osaka.The company acquired Dainippon Pharmaceutical Company, a public-private joint venture in Tokyo, and changed the name of the company to Dainippon Pharmaceutical Co., Ltd. | 
| 1908 | 
Osaka Pharmaceutical Testing Co., Ltd., acquired. | 
| 1914 | 
Chemical products business started. | 
| 1927 | 
EPHEDRINE "NAGAI"® (bronchodilator and antitussive) launched. | 
| 1950 | 
Veterinary drug business started. | 
| 1956 | 
OTC drug business started. | 
| 1960 | 
Food additive business established. | 
| 1962 | 
Voluntary recall of thalidomide preparation was implemented.*Click here to see the harmful incident concerning thalidomide.
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| 1963 | 
Dainippon Pharmaceuticals Taiwan Co., Ltd., established. | 
| 1968 | 
Suzuka Plant (Suzuka City, Mie Prefecture) established. | 
| 1970 | 
Construction of Research Laboratories (Suita City, Osaka Prefecture) completed. | 
| 1974 | 
Laboratory products business started. | 
| 1979 | 
DOLCOL® (antibacterial chemotherapy drug) launched. | 
| 1987 | 
The Japan Epilepsy Research Foundation established. | 
| 1988 | 
U.S. office opened.PRORENALR® (vasodilator) launched.CETAPRIL® (persistent ACE inhibitor depressor) launched. | 
| 1989 | 
EXCEGRAN® (antiepileptic) launched. | 
| 1993 | 
Construction of Central Distribution Center (currently, Kobe Distribution Center) completed. | 
| 1996 | 
EBASTEL® (long-acting antiallergic) launched. | 
| 1997 | 
One hundredth anniversary of founding commemorated. | 
| 1998 | 
London and Beijing offices opened.GASMOTIN® (gastroprokinetic) launched. | 
| 1999 | 
KADIAN® (persistent cancer pain analgesic) launched. | 
| 2002 | 
QVAR™ (inhaled steroid-based antiasthmatic) launched. | 
| 2003 | 
Osaka Plant closed (merged with Suzuka Plant)OPSO® (solution for treating cancer pain) launched. | 
| 2005 | 
OTC drug business transferred.EBASTEL® OD tablet (long-acting antiallergic) launched. |