Tylenol: How an unsolved mystery changed the way we take pills

Odds are that you have had moments of frustration trying to open new bottles of Aspirin or other over-the-counter medications. Perhaps your fingernails are not up to the task of breaking the seal on the plastic wrap. Or maybe the pop-up cap is a challenge, seemingly designed to be not only childproof but also adultproof. The foil covering the lip of the bottle may defy neat tearing. Then you struggle to remove every wisp of the cotton wad standing between you and the medicine.