The most common and most likely answer to this crossword clue is the 9 letter word IBUPROFEN
I've seen this crossword clue in The Guardian
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More clues leading to the result IBUPROFEN
- Brief up on new medicine
- Drug creating high in building of bonfire
- Hangover cure, medicine for pub, if somewhat contrary?
- Drug that is new probed by British university academic
- Drug given by posh fellow replacing playwright’s heart
- Build up bonfire in preparation for clearing annoying problem
- What dulls pain that is new, beneficial to boozer turning in?
- Bonfire lit up inside compound, perhaps
- What dulls headache that is new for boozer turning in?
- Break up bonfire – that’s something to bring down temperature!
Buddy explains!

The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does IBUPROFEN mean?
IBUPROFEN noun- An NSAID, isobutylphenyl propionic acid.