Rohto Pharmaceutical Co. is a manufacturer of over the counter (OTC) drugs in Japan, established in 1899 in Osaka, Japan. Rohto’s strengths, uniquely are the technology and know-hows accumulated in the development of OTC drugs. Rohto Pharmaceutical Co., Ltd has been producing and marketing eye drops for over 100 years. Rohto® is the #1 brand of eye drop in the world and has been #1 in Japan for the past 40 years. Unlike regular eye drops, Rohto stands out with a unique cooling sensation. The cooling effect of the eye drops brings instant freshness to your eyes by providing fast relief and cooling comfort. Whether you’ve had a long day of driving or staring at computer screens, Rohto is here to keep you going.