Greek character employed by local pharmacy (5)

I believe the answer is:

alpha

'greek character' is the definition.
(letter from the Greek alphabet)

'employed by local pharmacy' is the wordplay.
'employed by' says the answer is hidden in the clue.
'ALPHA' is hidden within 'local pharmacy'.

(Other definitions for alpha that I've seen before include "First in sequence" , "A for Aristophanes!" , "Foremost" , "leader in Athens, originally" , "Foreign character" .)

I've seen this clue in The Telegraph.

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