It's arguable that Acetaminophen shouldn't be an OTC drug. And that, had its liver toxicity been fully understood, it probably wouldn't be.
At the time, it apparently seemed a good alternative to aspirin which does cause some number of people to have stomach problems. (As well as having a particularly extensive repertoire of only somewhat understood physiological effects, for better or worse.)
At the time, it apparently seemed a good alternative to aspirin which does cause some number of people to have stomach problems. (As well as having a particularly extensive repertoire of only somewhat understood physiological effects, for better or worse.)