Soluble Fiber Excellent Source of Fiber USDA Vegetarian - Vegan Non - GMO Probiotics - Enzymes - Digestive Family Owned Since 1968 Certified by QAI 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.