Today in Chicago History: 7 people who took cyanide-laced Tylenol capsules die within 24-hour period
- Posted on September 29, 2025
- By Chicago Tribune
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Today in Chicago History: 7 people who took cyanide-laced Tylenol capsules die within 24-hour period

Here’s a look back at what happened in the Chicago area on Sept. 29, according to the Tribune’s archives.