Metamucil

Metamucil® is the only leading fiber supplement brand that contains 100% natural psyllium husk, a great source of both soluble and insoluble fiber.
Unlike clear-mixing fiber supplements, the psyllium in Metamucil forms a viscous gel, which helps the body maintain healthy blood sugar levels and helps lower cholesterol levels to promote heart health.
In The Stomach:
As the psyllium fiber enters your stomach it thickens and forms a viscous gel that traps some sugars and carbohydrates.
In The Small Intestine:
When the gel moves down the small intestine, trapped sugars are slowly released and absorbed into the body, helping maintain healthy blood sugar levels. The gelled psyllium traps some bile acids in the small intestine, preventing reabsorption. These trapped bile acids are passed into the large intestine with waste. The liver draws cholesterol from the blood to make new bile acids, resulting in lower blood cholesterol levels.
The soluble viscous gelling fiber from psyllium husk maintains it's gelled nature through the digestive tract. In the large intestine this results in its stool normalizing benefit. By absorbing and retaining water the psyllium softens the stool to relieve constipation.