Watch: What Killed Game of Thrones' King Joffrey?

Game of Thrones fans were ecstatic to watch the budding mad king, Joffrey Baratheon, keel over in a recent episode. But what exactly killed him? The American Chemical Society has done some investigating of their own and deduced what “the strangler,” a rare poison in the Seven Kingdoms, could be made out of in real life. Their video explains that after ingesting a deadly toxin derived from the strychnine tree, the muscles around the face and neck start to tighten up and convulse, causing the victim to choke to death. Sound familiar?

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