Bogus cure - often it's hopeless (11)
I believe the answer is:
counterfeit
'bogus' is the definition.
('counterfeit' can be similar in meaning to 'bogus')
'cure often it's hopeless' is the wordplay.
'hopeless' is an anagram indicator.
'cure'+'often'+'it'='cureoftenit'
'cureoftenit' with letters rearranged gives 'COUNTERFEIT'.
(Other definitions for counterfeit that I've seen before include "Forge" , "Pretended, sham" , "Sham, fake" , "Forged, false" , "Pirate" .)