Crossword Genius

Consumers wind-up those taking drugs (3,5)

Ross

I believe the answer is:

end users

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'consumers' is the definition.
(end user is a kind of consumer)

I don't understand the remainder of the clue.

Can you help me to learn more?

(Other definitions for end users that I've seen before include "Rudeness in the ultimate consumers" , "ultimate recipients" .)

I've seen this clue in The Irish Times.
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