The overlap in the terminology that is used to define asthma, chronic bronchitis, emphysema, COPD and bronchiectasis is the greatest cause of confusion in distinguishing these diseases and in accurately determining the prevalence of airway diseases.
Excedrin Extra Strength contains a combination of 250 mg of acetaminophen, 250 mg of aspirin and 65 mg of caffeine. This represents the original Excedrin created to treat headache pain. Excedrin also makes Excedrin Migraine to target the pain caused by migraine headaches. Excedrin Migraine contains 250 mg of acetaminophen, 250 mg of aspirin and 65 mg of therapeutically active caffeine.
Excedrin is a migraine drug that mixes aspirin (for its anti inflammatory properties) acetaminophen [tylenol] (for its pain reducing properties) and caffeine because it constricts the blood vessels in your brain pressing on nerves in the skull (brains don't feel pain directly) to cause pain.