Nature's Sunshine Psyllium Hulls 500mg 100cThe Psyllium husk is a water soluble fibre that forms a mucilaginous gel on contact with water so acts as a bulking agent by swelling up to 14 times its original size. This enhances peristalsis which is the wave like muscular action that moves food along in the digestive tract making it beneficial in the treatment of constipation or for those suffering from haemorrhoids. Each capsule contains: Plantago ovata (Psyllium) seed husk powder 500mg