Cinnamon comes from a tree. People use the bark to make medicine. Cinnamon bark is used for gastrointestinal (GI) upset, diarrhea, and gas. It is also used for stimulating appetite; for infections caused by bacteria and parasitic worms; and for menstrual cramps, the common cold, and the flu (influenza). Cinnamon bark, as part of a multi-ingredient preparation, is applied to the forpremature ejaculation. In foods, cinnamon is used as a spice and as a flavoring agent in beverages. In manufacturing, cinnamon oil is used in small amounts in toothpaste, mouthwashes, gargles, lotions, liniments, soaps, detergents, and other rmaceutical products andcosmetics.