Dr Stewart Adams knew he had found a potential new painkiller [bbc.com] when it cured his hangover ahead of an important speech.
"I was first up to speak and I had a bit of a headache after a night out with friends. So I took a 600mg dose, just to be sure, and I found it was very effective."
Now 92, Dr Adams remembers the years of research, the endless testing of compounds and the many disappointments before he and his research team pinpointed ibuprofen as a drug with potential more than 50 years ago.