Tylenol murders

The Tylenol murders were a series of product-tampering poisonings in the Chicago area in 1982, in which cyanide-laced Tylenol capsules killed seven people.

The Tylenol murders were a series of product-tampering poisonings in the Chicago area in 1982, in which cyanide-laced Tylenol capsules killed seven people. The case became one of the most notorious unsolved crimes in U.S. history and led to major changes in drug packaging and consumer-product safety.

Events of 1982

The poisonings began on September 28, 1982, when people in the Chicago area took Tylenol capsules that had been adulterated with potassium cyanide. The deaths occurred over a short period and were initially linked through the common medication.

Investigation and suspect

Law enforcement focused on several leads, including James W. Lewis, who sent an extortion letter demanding money to stop the killings. Lewis was convicted of extortion, but no one was ever charged with the murders themselves.

Public health and legal impact

The case triggered a major recall of Tylenol and helped drive the adoption of tamper-evident seals and packaging reforms. It also influenced federal policy on product tampering in the United States.

Legacy

The Tylenol murders remain an unsolved crime and a major reference point in discussions of consumer-product safety. They are often cited as a turning point in how over-the-counter medicines are packaged and sold.