Bile is a thick digestive fluid. It is released by the liver and stored in the gallbladder.
Bile helps break down fats into fatty acids, which can be taken into the body by the digestive tract.
Bile contains mostly cholesterol, bile acids (also called bile salts), and bilirubin (a breakdown product of red blood cells). It also contains water and body salts (potassium and sodium), as well as very small amounts of copper and other metals.