Amends the Prevention of Tobacco Use by Minors and Sale and Distribution of Tobacco Products Act. Changes the name of the Act to the Prevention of Tobacco Use by Persons under 21 Years of Age and Sale and Distribution of Tobacco Products Act. Raises the age for whom tobacco products, electronic cigarettes, and alternative nicotine products may be sold to and possessed by from at least 18 years of age to at least 21 years of age. Defines "electronic cigarette". Repeals the Smokeless Tobacco Limitation Act. Amends various other Acts to make conforming changes.