Excedrin Migraine and Excedrin Extra Strength have the same active ingredients: acetaminophen, aspirin, and caffeine. So, how are they different?

Excedrin selling for hundreds of dollars on eBay. wls. By ABC7. Tuesday, July 10, 2012. ... "If it has the same amount of aspirin, acetaminophen and caffeine, the ingredients in Excedrin, ...

"If it has the same amount of aspirin, acetaminophen and caffeine, the ingredients in Excedrin, it should work just as well," ABC News Health and Medical Editor Dr. Richard Besser said.