S&D Co., Ltd develops and sells health functional food in South Korea. The company offers general functional food ingredients, health-oriented functional ingredients, and biological industry materials for the sleeping problems and glycoconjugate gastric functions. It provides health-oriented functional ingredients, such as Lindera glauca extract, Rice bran Extract, MPG-6/MPGT, RCS, and Xanthorrhizol, as well as other materials, including Pagopyridol, SD 1002F, and Panduratin. The company also offers general functional food ingredients comprising seasoning base/raw materials, miscellaneous, and organic materials. The company was founded in 1998 and is based in Cheongju, South Korea.