Ordered dodgy drug (4)
I believe the answer is:
bade
'ordered' is the definition.
(past tense of 'bid' as in to order)
'dodgy drug' is the wordplay.
'dodgy' becomes 'bad' (I can't explain this - if you can you should give a lot more credence to this answer).
'drug' becomes 'e' (E is another name for ecstasy).
'bad'+'e'='BADE'
Can you help me to learn more?
(Other definitions for bade that I've seen before include "Commanded with bead" , "Invited" , "Ordered" .)