Yerba Prima has been helping people achieve optimal colon health and internal cleansing since 1980, building their reputation on the highest quality psyllium and fiber supplements available. Their Psyllium Whole Husks use whole, premium-grade psyllium husks — not powder — which preserve the full gel-forming fiber matrix that sweeps the intestinal walls and promotes healthy regularity and cholesterol balance. Yerba Prima's Colon Care formula and Great Plains Bentonite detox clay have earned devoted followings among natural health practitioners. All fiber products are kosher, non-GMO, and free from artificial additives. For clean, effective, and uncomplicated colon health support, Yerba Prima's straightforward approach to fiber supplementation remains one of the best options available.