Psyllium husk or isphagula is the covering of seeds grown on the plant, Plantago Psyllium, which flourishes in the Middle East. Psyllium husk has long been recognized as an excellent means of getting more dietary fibre into a person's diet due to its high fibre count in comparison to other grains. Oat bran, also a good source of fibre, has about five grams of fibre per a third of a cup. Psyllium husk, on the other hand, offers approximately 71 grams of fibre for that same third of a cup. This heavy dose of dietary fibre makes psyllium husk the choice of many who suffer from constipation or diarrhea.