This chapter explores the parameters of government's role in controlling the informational environment: first, in conveying health information (government speech); second, in constraining advertising that adversely affects the public's health (commercial speech); and third, in requiring product health and safety disclosures or counter-advertising (compelled commercial speech). The chapter concludes with a case study on the regulation of cigarette advertising. The chapter examines the conflict between the collective value of restraints on the free flow of harmful health-related information and the individual value of free expression.