Psyllium. Commission E thiab Lub Koom Haum Saib Xyuas Kev Noj Qab Haus Huv Ntiaj Teb pom zoo tias cov noob thiab husk ntawm blond psyllium muab kev pab ntawm cem quav; txhim kho peristalsis (kev txav ntawm lub plab zom mov) thiab cov quav quav (softer), tshwj xeeb tshaj yog rau cov neeg mob qhov quav fissures.