Yep. It amazes me how an OTC can work on my headaches when nothing else will. But like my Rx pain meds I have to just let myself suffer from time to time to not have to deal with rebound headaches.Basically what Bob said. Tylenol is awful on the liver and its LD-50 is terribly low, for an OTC med. Basically that is how much it takes to kill 50% of the people that take that much. I remember one teenage girl that decided to kill herself with Tylenol, took it and changed her mind but didn't tell anyone till the next day. Too late, it killed her liver and she died, very sad case. I'm still not sure they should have ever made it OTC, despite how well it works on my headaches.
You'd think "they" could figure SOMETHING out that works but then there are so many causes of headaches how could they, realistically??
I wish the aliens would come on down and share all their secrets with us.