Site manager detailed ineffective medication (8)

I believe the answer is:

placebos

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'site manager detailed ineffective medication' is the definition.
I can't judge whether this definition defines the answer.

'site manager detailed' is the wordplay.
'site' becomes 'place' (synonyms).
'manager' becomes 'boss' (I've seen this before).
'detailed' means to remove the last letter (the tail of the word is removed).
'boss' with its last letter taken off is 'bos'.
'place'+'bos'='PLACEBOS'

Can you help me to learn more?

(Other definitions for placebos that I've seen before include "Physically inactive medicines" , "Useless drugs" , "Blase cop offering dummy cures" , "Medications with no medicinal content" , "Inert medications, given in drug trials" .)

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