Before surgery, medic gives some medicine (5)
I believe the answer is:
drops
'some medicine' is the definition.
(thesaurus)
'before surgery medic gives' is the wordplay.
'before' means one lot of letters go next to another.
'surgery' becomes 'op' (short for operation).
'medic' becomes 'dr' (doctor).
'gives' becomes 's' (I can't explain this - if you can you should give a lot more credence to this answer).
'op' after 'dr' is 'drop'.
'drop'+'s'='DROPS'
Can you help me to learn more?
(Other definitions for drops that I've seen before include "Stops" , "Falls" , "treatment for eye" , "Delivers" , "Lets fall" .)