Whole drink taken to health centre (5)
I believe the answer is:
total
'whole' is the definition.
(total is a kind of whole)
'drink taken to health centre' is the wordplay.
'drink' becomes 'tot' (I've seen this before**).
'taken to' means one lot of letters go next to another.
'centre' indicates the central letters.
The central letters of 'health' are 'al'.
'tot'+'al'='TOTAL'
(Other definitions for total that I've seen before include "Come to" , "Whole amount" , "Utter" , "Reckon" , "outright" .)