Corophizine is a drug that is used to prevent infection.
The Bajorans use corophizine in their hyposprays. (DS9 video game: The Fallen)
In 2369, Julian Bashir gave Miles O'Brien thirty ccs of corophizine to avoid secondary infection when O'Brien was suffering from a fever. (DS9 episode: "Babel")
In 2375, Neelix gave Seven of Nine corophizine. (VOY short story: "Closure")