Drink loads, in conclusion (5,4)
I believe the answer is:
cream soda
'drink' is the definition.
(I've seen this before)
'loads in conclusion' is the wordplay.
'loads' becomes 'reams' (I've seen this in another clue).
'in' is an insertion indicator.
'conclusion' becomes 'coda' (coda is a kind of conclusion).
'reams' put into 'coda' is 'CREAM SODA'.
(Other definitions for cream soda that I've seen before include "Carbonated soft drink" , "Sparkling stuff" , "Vanilla-flavoured pop" , "Vanilla-flavoured fizzy drink" .)