Doctor electing to inject drug, appealing to viewers (9)
I believe the answer is:
telegenic
'appealing to viewers' is the definition.
(I've seen this before)
'doctor electing to inject drug' is the wordplay.
'doctor' indicates anagramming the letters.
'to inject' indicates putting letters inside (inserted letters are injected).
'drug' becomes 'e' (E is another name for ecstasy).
'electing' anagrammed gives 'telegnic'.
'telegnic' going around 'e' is 'TELEGENIC'.
(Other definitions for telegenic that I've seen before include "having broadcast appeal" , "attractive on screen" , "Nice to watch" , "appealing to viewers" , "Coming over on the tube" .)