Even though this article is dated 2009, Pfizer was asked to pay $2.3 billion dollars to settle allegations of kickbacks in off-label marketing campaign. Per the article 49 states and the federal government reached the largest-ever settlement at the time over allegations of healthcare fraud. Pfizer Inc settled civil and criminal allegations that Pfizer and its subsidiaries paid kickbacks and engaged in off-labeling marketing campaigns that improperly promoted numerous drugs that the company manufactured

https://law.georgia.gov/press-releases/2009-09-02/pfizer-pay-23-billion-settle-allegations-kickbacks-label-marketing