designs for health. Stable & Acid Tolerant Strains - These 5 strains represent some of the most necessary, stable and best-researched flora known today, and provide excellent adherence to the gut wall.* 20 Billion CFU - Probiotic Synergy Powder provides an impressive 20 billion live CFU (colony forming units) in each 2 gram serving.* Prebiotic Inulin For Gut Health - This formula also contains inulin, a prebiotic fiber which benefits GI health through its ability to help modulate gut microbiota.* Higher Standards. Better Results - Designs for Health maintains a strict, no-compromises approach to quality raw material selection. We never cut corners with substandard ingredients. This product is Gluten-Free, Non-GMO and Soy-Free. Over 50,000 Doctors Agree - Designs for Health is the physician's choice for top quality professional strength supplements since 1989. Our "Science First" philosophy ensures our products are based on the most recent research and use the highest quality raw ingredients.