Ox bile extract concentrates bile salts from cattle gallbladders into a supplement. People use it to help break down fats when their own bile supply runs short, which often happens after gallbladder removal, during low bile production, or with bile insufficiency. Taking it just before or with a fatty meal supports the emulsification and absorption of dietary fats and the fat-soluble vitamins A, D, E, and K.
Dosing too high often triggers stomach upset or diarrhea. Because bile irritates an empty stomach, always take this supplement with food. Skip it entirely if you have a blocked bile duct, active peptic ulcers, or inflammatory bowel disease.