In 1975, Rohto gained trademark rights to
Mentholatum from
The Mentholatum Company Inc., allowing the sale of Mentholatum-branded products. Rohto has two production plants in Japan and six across the US, UK, China, Vietnam, Hong Kong, and Indonesia. Rohto entered the Vietnamese market in 1997 expanding sales to the Asia Pacific region. In mid-2010, Rohto entered the Indian and
Bangladeshi markets. In 2024, Rohto Pharmaceutical entered into a partnership with the Austrian Sigmapharm Group. This partnership aimed at expanding the production and sale of
ophthalmic drugs and medical products across Europe, with Rohto Pharmaceutical investing nearly €30 million in research, development, production, and sales. == History ==