Gin mixed with soda is what doctor might give you (9)
I believe the answer is:
diagnosis
'what doctor might give you' is the definition.
I can't tell whether this defines the answer.
'gin mixed with soda is' is the wordplay.
'mixed with' is an anagram indicator.
'gin' with its letters mixed up with 'soda' makes 'diagnos'.
'diagnos'+'is'='DIAGNOSIS'
Can you help me to learn more?
(Other definitions for diagnosis that I've seen before include "Interpretation of" , "doctor's opinion" , "Doctor's verdict" , "Identification of disease" , "Identification of a problem from its symptoms" .)