Psyllium has been long used as intestinal lubricant and laxative. Because of its gentle lubricating action, it is especially useful to hemorrhoid sufferers. Both P. Psyllium and P. Ovata were listed in the 1980 edition of the U.S. Pharmacopeia.
Psyllium powder, if inhaled, may cause asthma, and eating unsoaked seeds may cause gastrointestinal problems. See a doctor before using psyllium if you have an intestinal disorder.