citrucel vs metamucil vs benefiberbenefiber vs metamucil vs miralaxmetamucil compared to benefibermetamucil versus benefibermetamucil vs benefiber for weight lossmetamucil vs benefiber for ibsbenefiber v metamucilcholesterol side effectspantethine cholesterolniacin high cholesterolalternative cholesterol treatmentsside effect of cholesterol pills