Reviving (11)
I believe the answer is:
restorative
'reviving' is the definition.
(I know that reviving can be written as restorative)
This is all the clue.
(Other definitions for restorative that I've seen before include "Health-giving medicine" , "promoting recuperation" , "health-promoting medicine" , "Invigorating potion" , "Tonic" .)