Nikkei press reported 2015 generic drug market share in Japan. According to it, the top supplier was Sawai Pharmaceutical Co. (12%).
Figure: 2015 Generic Drug Market Share in Japan
| Manufacturer | Market share (%) |
| Sawai Pharmaceutical Co. | 12.0 |
| Nichi-Iko Pharmaceutical Company | 11.9 |
| Towa Pharmaceutical Co. | 7.5 |
| Meiji Seika Pharma Co. | 4.9 |
| Nippon Kayaku Co. | 4.0 |
| Others | 59.7 |
Source is Nikkei Sangyo Shimbun newspaper, the article on 2016 July 25th.
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