Double dose of drugs for diva? (7)
I believe the answer is:
heroine
'diva?' is the definition.
(thesaurus)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for heroine that I've seen before include "Brave woman" , "Intrepid woman" , "Lead female character" , "Perhaps Tess" , "Chief female character in a book" .)