Verkkohow do companies regain public trust after something goes seriously wrong? We looked at how tylenol responded after someone inexplicably spiked its. Verkkotesting eventually identified eight poisoned bottles — five connected to fatal poisonings and three that surfaced after the murders. One of the most common over. Verkkopills tainted with everything from rat poison to hydrochloric acid sickened people around the country. Verkkothese tylenol capsules were connected with one of the 1982 poisonings. Cook county doctors found that the capsule at right contained cyanide,. Verkkoin a span of three days beginning sept. Verkkoon testing, each of the capsules proved to be laced with potassium cyanide at a level toxic enough to provide thousands of fatal doses. Verkkosomeone, authorities realized, had taken tylenol bottles from store shelves and contaminated them with potassium cyanide before putting them back. Five to seven milligrams of potassium cyanide can kill a person, and the pills were a far.