Kill-or-cure? - then dies from the next remedies (7)
I believe the answer is:
extreme
'kill-or-cure?' is the definition.
(extreme remedies might be called kill-or-cure)
'from the next remedies' is the wordplay.
'from' says the answer is hidden in the clue.
'EXTREME' is hidden in the letters of 'next remedies'.
'then dies' acts as a link.
This may not be correct. Some or all of it may belong to another bit of the clue.
(Other definitions for extreme that I've seen before include "not least" , "Going to great lengths" , "Far beyond the norm" , "over the top" , "lacking moderation" .)