The document discusses medication errors and the need for a comprehensive approach to reduce preventable errors. It reports that at least 1.5 million preventable adverse drug events occur each year in the US, costing $3.5 billion annually. The National Centers for Education and Research on Therapeutics (CERTS) were established to conduct research and provide education to optimize drug use, reduce errors and adverse events, and improve patient outcomes and health. CERTS focuses on research and web-based education for professionals and consumers around safe medication use.