Santen Pharmaceutical Co., Ltd. engages in the research and development, manufacture, and marketing of pharmaceuticals and medical devices in Japan and internationally. Its product portfolio includes tafluprost/timolol maleate, a prostaglandin F2a derivative and a beta-adrenergic receptor blocker; and netarsudil mesilate and latanoprost, a prostaglandin F2a derivative which is marketing approval phase for the treatment of glaucoma and ocular hypertension. The company also offers sepetaprost, a prostaglandin analogue eye drop drug that is in phase 3 of clinical trials; and latanoprost, an ophthalmic emulsion of a prostaglandin F2a derivative which is filed for marketing approval for the treatment of glaucoma and ocular hypertension.