The major component of Psyllium seed (Plantage Psyllium) is mucilage, which consists of both soluble and insoluble fibre. Mucilage is found in both the outer husks and the inner seed. Mucilage is made up of indigestible fibre which absorbs water and swells several times its original size. 

If psyllium is taken with lots of water it acts as a bulk laxative because psyllium absorbs and retains the water, swells to several times its original size thus stretching the large intestine and decreasing the length of time that stools stay in the large intestine. 

In cases of diarrhoea, psyllium's mucilage absorbs the excess liquid and helps slow down the movement and also delay the emptying of the contents of the gastrointestinal tract. 

The mucilage in psyllium also absorbs toxins from external sources leg. carcinogens) and internal sources (produced by intestinal bacteria and parasites). The ability to absorb toxins combined with the bulking action of psyllium means that all toxins are cleared out much faster than normal. The insoluble fibre in the mucilage acts as a "brush" to clean out the colon as it moves down the large intestine. The absorbent action of the mucilage also interferes with cholesterol absorption presumably by binding bile acids. Interference with cholesterol absorption can lead to decreased blood cholesterol levels and thus lessens heart disease. 

The bulking effect of psyllium means that colon contents are eliminated more frequently and easily thus lessening the frequency of haemorrhoids and hiatus hernias. 

The ability to absorb toxins from the intestine can lead to less intestinal diseases (e.g. cancer of the colon). 

Long term use of psyllium will help stop chronic constipation. Psyllium should always be consumed with lots of water (8 glasses per day) because psyilium absorbs water in order to swell. If this water is not provided by drinking it will be drawn out from the body. An existing constipation will worsen when Psyllium is taken without sufficient water.

This information is for educational purposes only. Consult your health care provider for more specific information regarding your individual health concerns and condition.