What does the cryptic crossword clue "Drug abuse in pub for example at an end (9)" mean?

The definition is "Drug". The wordplay uses an anagram. anagram of IN PUB FOR E = IBUPROFEN; definition: "Drug" The answer is IBUPROFEN.

Drug abuse in pub for example at an end (9)

Independent Cryptic #11800 | 9 Across | 2024-08-05 flower