Guar gum is a fiber from the seed of the guar plant.
Guar gum is used as a laxative. It is also used for treating diarrhea, irritable bowel syndrome (IBS), obesity, and diabetes; for reducing cholesterol; and for preventing “hardening of the arteries” (atherosclerosis).
In foods and beverages, guar gum is used as a thickening, stabilizing, suspending, and binding agent.
In manufacturing, guar gum is used as a binding agent in tablets, and as a thickening agent in lotions and creams.
Guar gum is a fiber that normalizes the moisture content of the stool, absorbing excess liquid in diarrhea, and softening the stool in constipation. It also might help decrease the amount of cholesterol and glucose that is absorbed in the stomach and intestines.
There is some interest in using guar gum for weight loss because it expands in the intestine, causing a sense of fullness which decreases appetite.