USANA Health Sciences formulates exceptional, science-based nutritional and personal-care products. However, inferior manufacturing can destroy even the greatest product formulations. For this reason, USANA manufactures its own nutritional supplements, and voluntarily meets pharmaceutical Good Manufacturing Practices (GMP). Pharmaceutical GMP standards are far more stringent than the food GMP requirements set by the U.S. government for supplements.

To adhere to the exacting standards of pharmaceutical GMP, and to ensure the quality of every product manufactured, USANA inspects all raw ingredients before they are mixed, tests the product during manufacturing, and performs a final analysis before any product is sent to the customer. USANA's Quality Assurance team keeps track of every detail, from careful testing and evaluation of raw materials, to meticulous product shipping and storage. Visitors to USANA's corporate headquarters can take a self-guided tour to see USANA's manufacturing process firsthand. USANA's Essentials are rated at the top of the chart by NutriSearch's Comparative Guide to Nutritional Supplements, Edition 2011, issued by Lyle MacWilliam, MSc, FP, Biochemist, former Canadian Member of Parliament, Member of the Legislative Assembly for British Columbia and former Canada's federal Minister of Health. USANA's Olympic Athletes won 22 Olympic Medals at the 2010 Vancouver Games. Jennifer Heil won GOLD again!