Improvement coming from cure for malady (6)
I believe the answer is:
reform
'improvement' is the definition.
(reform is a kind of improvement)
'coming from cure for malady' is the wordplay.
'coming from' says the answer is hidden in the clue.
'REFORM' is hidden within 'cure for malady'.
(Other definitions for reform that I've seen before include "Correct(ion of) abuses" , "Removal of abuses" , "Mend one's ways" , "Show improvement" , "Go straight" .)