The most common and most likely answer to this crossword clue is the 1 plus 4 plus 2 plus 3 plus 3 letter word A SHOT IN THE ARM
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More clues leading to the result A SHOT IN THE ARM
- When sweaty, endless serving tonic
- As sexy nurses can get married, it's stimulating
- Running the marathon is something invigorating!
- Running the marathon is quite a tonic
- Booster, perhaps?
- Boost area this month with reinvigoration
- Injury boost?
- Some uplift when sweltering and not quite ready to fight?
- Boost run-down area this month
- Booster injection
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.