Surveys have shown that the fiber content of the American diet is typically about half of government recommended levels. Whole Psyllium Husks can be a convenient way to increase the intake of dietary fiber. It has the ability to swell up to 50 times its initial volume when added to liquid. This bulking action can play an important role in maintaining regularity and gastrointestinal health. * NOW Psyllium Husks are grown in India and contain no yeast, wheat, gluten, corn, soy, milk, preservatives or additives.