Purdue’s tactic of giving away coupons for free samples of OxyContin harkens back to the Xalisco Boys giving away free heroin to addicts and Pfizer giving away coupons for Valium in the 1960s. Purdue’s tactic of advertising at CME seminars is particularly aggressive, as it allows them to reach large numbers of doctors at once. Because of the lack of stigma associated with the pharmaceutical industry, Purdue is able to employ these marketing tactics for years before regulations are set in place to prevent such practices.