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For Heart Health: Psyllium fiber, the natural dietary fiber found in Metamucil, is clinically proven to help lower cholesterol levels because it forms a thick gel that traps some cholesterol, bile acids and waste in the gut.
However, the similarities end here to some extent because Benefiber powder may have more to offer than its other two popular competitors. Metamucil has been a mainstay in the industry of being regular for a very long time. It is one of the most trusted and most recommended ways to fill in for a lack of dietary fiber.