What does the cryptic crossword clue "Police fire on pub which produces drug (9)" mean?

The definition is "drug". The wordplay uses an anagram. anagram of FIRE + ON + PUB = IBUPROFEN; definition: "drug" The answer is IBUPROFEN.

Police fire on pub which produces drug (9)

Independent Cryptic #11880 | 12 Across | 2024-11-06 flower