Psyllium: Seeds (also known as blond psyllium
or ispaghula) are derived from a species of plantain that is native to India
and Iran. The seeds are small and reddish-brown, with no distinctive
aroma and almost no flavor. They absorb water and become surrounded with
mucilage that has excellent emulsifying power and is prized as a laxative.
The main constituent of
psyllium seed is dietary fiber. Although the majority of it is insoluble,
there is also a fair bit of soluble fiber in the mucilage. This is mostly
polysaccharides. The seeds also contain proteins, other carbohydrates,
oil, sterol, and some flavonoids, but the soluble fiber is primarily
responsible for its therapeutic action.
Psyllium is a bulk laxative.
The powdered seeds are taken with ample water, and once in the intestine
they swell. This "bulk" encourages defecation, and the mucilage tends to
soften the stool and make it easier to pass.
This herb is
frequently recommended for the treatment of constipation and is even approved
as an over-the-counter drug in the United States under brand names such as
Fiberall, Konsyl, Metamucil, Modane Bulk, or Serutan.
to its value for treating chronic constipation, psyllium can be useful in
treating diarrhea. In one study, symptoms of irritable bowel
syndrome improved with psyllium administration. Diarrhea following
gallbladder surgery has also been successfully treated with psyllium
Psyllium preparations can reduce pain and bleeding from
Psyllium seed has also
been used to reduce high levels of cholesterol and triglycerides. In an
eight-week trial, total cholesterol decreased by 14 percent and undesirable LDL
cholesterol by 20 percent. In studies lasting more than two months,
triglycerides came down to just over half the baseline levels. Psyllium
seed is also reported to slow the absorption of dietary sugar. This may be
beneficial in diabetes, although it is a subtle effect.
The usual adult dose is 7 g
of psyllium seed preparation up to three times a day to a maximum of 30 g per
day. It must be taken with at least 8 ounces of water each dose.
Paradoxically, the dose for diarrhea can range even higher to a maximum of 40 g
daily. Children from six to twelve years old are treated with half the
adult dose. It may take two or three days for psyllium to produce the
desired effects. Unlike other laxatives, psyllium seed may be used as long as
needed without fear of dependence.
Children under six years old should take psyllium seed or psyllium preparations
only under medical supervision. Psyllium seed is not appropriate for
anyone with intestinal blockage. People allergic to psyllium must avoid
it. Constipation or diarrhea that persists for several days deserves
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