The Bio Sense Difference - Money Back Guarantee (no questions asked) We use only the most pure, most potent and high quality ingredients available in our natural dietary supplements. We do this because we want our products to work for you time and again. We want you to be a customer for life! All of our products are formulated in the U.S.A. . Tested for PURITY & POTENCY each and every time Bio Sense is committed to ensuring that every product released meets stringent standards for purity, potency, and safety. From raw ingredient sourcing to manufacturing and distribution, we require every ingredient and finished product to go through a series of quality and safety tests. Ingredients are tested by both internal and external third party laboratories for purity and potency.