Santen Pharmaceutical Co., Ltd engages in the manufacture and sale of pharmaceutical products and medical devices. It operates through the following segments: Pharmaceuticals and Others. The Pharmaceuticals segment includes prescription ophthalmic drugs, anti-rheumatic pharmaceuticals, and over-the-counter products. The Others segment offers medical equipment and devices. The company was founded by Kenkichi Tagushi in 1890 and is headquartered in Osaka, Japan.