[3] Hisamitsu has specialised in transdermal drug delivery system technology[4] (TDDS) since the introduction of its original line of patches in 1903.

Hisamitsu also manufactures the Mohrus and Mohrus-Tape lines of external pain relief prescription products for the Japanese drug market.

The company also manufactures internal medicines, eyedrops for general application, and the Lifecella Face Mask, a skincare product.

The prototype of Hisamitsu's Salonpas patch was created in 1903 through the application of asahi mankinko, a poultice consisting of rubbing ointment pasted onto Japanese paper.

Hisamitsu also has overseas facilities in Britain, Australia, Brazil, the Philippines, Hong Kong, Singapore, Vietnam, Indonesia, Taiwan and Malaysia.

According to the company, Mohrus and Mohrus-Tape have the largest market share in prescription external anti-inflammatory drugs in Japan with 54% in 2nd generation NSAID patches.