CLINICALLY PROVEN IN OVER 20 HUMAN CLINICAL TRIALS: Our AHCC mushroom extract is comprised of several species of medicinal mushrooms including Shiitake and Mycelia. AHCC is unique in that while most mushrooms contain primarily Beta Glucans, AHCC is rich in Alpha-Glucans, a type of polysaccharide with very potent immune enhancing effects. MADE IN USA & 100% SATISFACTION GUARANTEE: Our AHCC supplement is manufactured in the USA in an FDA registered facility that adheres to Good Manufacturing Practices (GMP). We offer a no questions asked money back guarantee because we know our AHCC mushroom extract will work for you. SUPERIOR AHCC QUALITY: Quality of Life's AHCC is the most potent mushroom extract available. Our AHCC has been researched by Yale, Harvard and used by thousands of people worldwide. Unlike other AHCC Supplements, AHCC powder, mushroom supplements, mushroom extracts and active hexose correlated compounds, Quality of Life's AHCC's complex is clinically studied.