WHILE SOME NUTRACEUTICAL MANUFACTURERS FORMULATE PRODUCTS USING LOW GRADES OF INGREDIENTS, OR CHASE THE LATEST HEALTH FADS, LANDIS REVIN UTILIZES ONLY PHARMACEUTICAL GRADE INGREDIENTS, PRODUCED UNDER GOOD MANUFACTURING PRACTICES (GMP) BY CERTIFIED MANUFACTURERS IN THE UNITED STATES. THEIR INGREDIENTS ARE SOURCED FROM LEADING SUPPLIERS AND ARE RIGOROUSLY TESTED AND INSPECTED BEFORE REACHING PRODUCTION. THE PRODUCTS ARE PROUDLY MADE IN THE USA. LANDIS REVIN NUTRACEUTICALS MAKES EVERY EFFORT TO PROVIDE CUSTOMERS NOT ONLY WITH THE HIGHEST QUALITY PRODUCTS, BUT WITH CONCISE INFORMATION ON THEIR USE AND EFFECTIVENESS.