Odd insult about ingested medicine (7)
I believe the answer is:
linctus
'ingested medicine' is the definition.
'linctus' can be an answer for 'medicine' (I've seen this before). I'm not sure about the 'ingested' bit.
'odd insult about' is the wordplay.
'odd' is an anagram indicator.
'about' becomes 'c' (abbreviation for circa).
'insult'+'c'='insultc'
'insultc' is an anagram of 'LINCTUS'.
Can you help me to learn more?
(Other definitions for linctus that I've seen before include "The prescription" , "Syrup that may see a cough off" , "Cough-medicine" , "Special formulation" , "Cough medicine" .)