Prince Pharmaceutical Co., Ltd. manufactures and sells vitamin B1 active pharmaceutical ingredients (APIs) in Taiwan, Japan, Korea, and internationally. The company also offers health food and medicines; vitamin C tablets, vitamin B film-coated tablets, natto and rhodiola extract capsules, probiotic sachets, and plant extract capsules; and API products comprising felbinac, aldioxa, tulobuterol, ufenamate, bisbentiamine, thiamine disulfide, potassium guaiacolsulfonate, potassium cresolsulfonate, fusultiamine hydrochloride, and fursultiamine. Prince Pharmaceutical Co., Ltd. was founded in 1962 and is headquartered in Yúnlín, Taiwan.