Paid for everything one prescribed for? (7)

I believe the answer is:

treated

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'paid for' is the definition.
(I've seen this in another clue)

I don't understand how the remainder of the clue works.

(Other definitions for treated that I've seen before include "Given medical attention" , "Applied medication to" , "Attended to" , "Nursed" , "Provided remedies for" .)

I've seen this clue in the Evening Standard.

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