Wikipedia
Excedrin is an over-the-counter headache pain reliever, typically in the form of tablets or caplets. It contains paracetamol (acetaminophen), aspirin, and caffeine. Until late 2005 it was manufactured by Bristol-Myers Squibb, but in July 2005 it was purchased by (and is now produced by) Novartis, along with other products from BMS's over-the-counter business.
Excedrin was one of the top ten selling over-the-counter medicine brands in the United States. There are other brands on the market that contain the same combination of drugs, such as the Roter APC tablets available in Europe.
The brand became known for advertisements in which Excedrin cured especially unpleasant and excruciating headaches (which were termed in the advertisements as "Excedrin headaches," later called "Excedrin tension headaches").
In 2007, the brand branched out into marketing for other types of pains with the introduction of Excedrin Back & Body, which removed the caffeine from the normal mixture.