Chicago Tylenol murders

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The Chicago Tylenol murders were a series of poisoning deaths resulting from drug tampering in the Chicago metropolitan area in 1982. The victims had all taken Tylenol-branded acetaminophen capsules that had been laced with potassium cyanide. Seven people were killed in the original poisonings, with several more killed in subsequent copycat crimes.
Effects.
These incidents led to reforms in the packaging of over-the-counter medications and to federal anti-tampering laws. The actions of Johnson &amp; Johnson to reduce deaths and warn the public of poisoning risks have been widely praised as an exemplary public relations response to such a crisis.
No suspect was ever charged or convicted of the poisonings. New York City resident James William Lewis, who was the prime suspect, was convicted only of extortion for sending a letter to Johnson &amp; Johnson that took credit for the deaths and demanded $1 million to stop them.