It introduced its over-the-counter medications like cough suppressant in 1927, pain reliever in 1967 and an antiulcer agent in 1984.

[4] In 2019 Taisho bought French pharmaceutical manufacturer UPSA from Bristol Myers Squibb.

The company's principal line of business is over-the-counter (OTC) medicines, where it markets the brands Lipovitan-D, Pabron, Colac, Contac, Tempra, UPSA, Vicks and Kampo In prescription pharmaceuticals, the company's most successful product to date has been the macrolide antibiotic clarithromycin.

[citation needed] Taisho has sponsored the Japan national rugby union team since 2001.

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