“In the area of product safety, Pfizer’s biggest scandal involved defective heart valves sold by its Shiley subsidiary that led to the deaths of more than 100 people. During the investigation of the matter, information came to light suggesting that the company had deliberately misled regulators about the hazards. Pfizer also inherited safety and other legal controversies through its big acquisitions, including a class action suit over Warner-Lambert’s Rezulin diabetes medication, a big settlement over PCB dumping by Pharmacia, and thousands of lawsuits brought by users of Wyeth’s diet drugs.
Also on Pfizer’s list of scandals are a 2012 bribery settlement; massive tax avoidance; and lawsuits alleging that during a meningitis epidemic in Nigeria in the 1990s the company tested a risky new drug on children without consent from their parents.”
See also the section titled Product Safety.