There’s no way booze is a cure! (7)
I believe the answer is:
nostrum
'a cure' is the definition.
(nostrum is a kind of cure)
'there's no way booze' is the wordplay.
'there's' says to put letters next to each other.
'way' becomes 'st'.
'booze' becomes 'rum' (rum is a kind of booze).
'no' put next to 'st' is 'nost'.
'nost'+'rum'='NOSTRUM'
'is' acts as a link.
(Other definitions for nostrum that I've seen before include "Phoney panacea" , "Patent medicine of highly questionable value" , "Quack cure" , "our Latin" , "secret potion" .)