Chong Kun Dang Pharmaceutical Corp. manufactures, markets, and sells medicines in South Korea and internationally. Its product range includes prescription drugs for hypertension, hyperlipidaemia, and diabetes, as well as immunosuppressants, over-the-counter medicines, and consumer health products such as insecticides, hair dyes, and health supplements. The company was founded in 1941 and is headquartered in Seoul, South Korea.