In the early morning of September 29, 1982, 12-year-old Mary Kellerman of Elk Grove Village outside of Chicago, Illinois, woke up with a sore throat and a runny nose. Not the most concerning of symptoms, but Mary told her parents and they gave her a single Extra-Strength Tylenol capsule.
Within seconds of taking the capsule, Mary’s father heard her coughing and then the sound of something hitting the floor, the Chicago Tribune reported. He called Mary’s name but received no response, so he went to the bathroom door and found her lying on the floor. Her eyes were fixed and dilated, her breathing was shallow, and she seemed to be suffocating.
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