Soluble Fiber Excellent Source of Fiber Non-GMO Vegetarian/Vegan Kosher Probiotics/Enzymes/Digestive Family Owned Since 1968 GMP Quality Assured Soluble fiber from foods such as psyllium seed husks, as part of a diet low in saturated fat and cholesterol, may reduce the risk of heart disease. A serving of Whole Psyllium Husks supplies 6 grams of the 7 grams soluble fiber necessary per day to have this effect.