Sections want heroin to provide dazed conditions (7)
I believe the answer is:
trances
'conditions' is the definition.
(trance is a kind of condition)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for trances that I've seen before include "Hypnotic states" , "what half-conscious people experience?" , "Recants (anag.)" .)