Welcome to the 2003–2004 edition of Pfizer’s Clear Health Communication Initiative. We are pleased to present this compendium, which highlights Pfizer’s solutions and tools to address low health literacy, one of the most important public health issues we face today. The compendium is intended for use by health care providers, community health workers, academics, patient and advocacy groups and policymakers, all of whom are important stakeholders in health care. Pfizer strongly believes that reaching out to the health care community is vital to tackling the challenges of health literacy and finding solutions to this devastating public health issue.