Crossword Genius

Shot in the arm in Washington, I collapsed (5)

Ross

I believe the answer is:

tonic

'shot in the arm' is the definition.
(both can mean something which stimulates)

'in washington i collapsed' is the wordplay.
'in' says the answer is hidden in the clue.
'TONIC' is hidden within 'washington i collapsed'.

(Other definitions for tonic that I've seen before include "Invigorating medicine - keynote" , "medicinal preparation" , "It goes with gin" , "Quinine drink; keynote" , "A pick-me-up drink, nice with gin" .)

I've seen this clue in The Telegraph.
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