Hydrox is the brand name for a creme-filled chocolate sandwich cookie that debuted in 1908 and was manufactured by Sunshine (later Sunshine Biscuits). Its name was formed from the atomic elements which make up pure water: hydrogen and oxygen. The similar Oreointroduced later, in 1912was inspired by the Hydrox, yet Hydrox suffered from the impression of being a knockoff. Compared to the Oreo, the Hydrox had a 'tangy, less-sweet filling' and a crunchier cookie that stood up better in milk. Sunshine Biscuits was purchased by Keebler in 1996, and in 1999, Keebler replaced Hydrox with a similar but reformulated product named Droxies. Keebler was later acquired by Kellogg's in 2001. Kellogg's removed Droxies from the market in 2003. Kellogg's now markets a chocolate sandwich cookie under the Famous Amos brand. Kellogg's says the Hydrox recipe is unique.