More tonic ordered for removal (10)
I believe the answer is:
extraction
'for removal' is the definition.
(extraction is a kind of removal)
'more tonic ordered' is the wordplay.
'more' becomes 'extra' (I've seen this before).
'ordered' is an anagram indicator.
'tonic' anagrammed gives 'ction'.
'extra'+'ction'='EXTRACTION'
(Other definitions for extraction that I've seen before include "Descent" , "Ethnic origin" , "one suffers with mouth open?" , "Dental operation" , "breeding" .)