About Rohto Pharmaceutical
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.