Partially hydrolyzed guar gum (PHGG) is a unique soluble fibre, a type of nondigestible complex carbohydrate that holds water as it forms a gel in your digestive tract. This may have some rather profound effects on metabolism, including reducing total cholesterol, lowering triglycerides, increasing HDL cholesterol, stabilizing blood sugar response to a meal, reducing digestive inflammation, curbing appetite, and assisting weight loss efforts.