Jeil Pharmaceutical Co., Ltd. engages in the development of pharmaceuticals. It operates through the Pharmaceutical and Other business divisions. The Pharmaceutical division offers drugs for antibiotic, oncology, cardiovascular, gastrointestinal, neuropsychiatry, urology, endocrinology, respiratory, antiviral, musculoskeletal, and others. The company was founded in March 1959 and is headquartered in Seoul, South Korea.