Santen Pharmaceutical has engaged in the manufacturing and sales of cold medicine since its establishment in 1890. With the slogan of “healthy eyes, healthy life,” they always adhered to ophthalmic medicine and ophthalmic drugs for the public, including eye drops, anti-arthritis, and other drugs. They are constantly committed to developing new drugs. It ranks first in the market share of medical ophthalmic drugs in Japan, and the share of general ophthalmic drugs ranks second after Lotus.