Seen in context, remedy’s drastic (7)
I believe the answer is:
extreme
'drastic' is the definition.
(thesaurus)
'seen in context remedy's' is the wordplay.
'seen in' indicates a hidden word.
'EXTREME' can be found hidden inside 'context remedys'.
(Other definitions for extreme that I've seen before include "not near the centre" , "Inordinate" , "Very intense - way-out" , "Acute, maximum" , "sheer" .)