Narco-mist, a reddish chemical mist, was a healing substance utilized to accelerate the healing process of wounded individuals through application to their bodies. Application of this substance was painless for the recipient. A Wheel medi-droid once used this spray on Han Solo following his participation in a gladiator contest in The Big Game, an event orchestrated by Simon Greyshade while Solo was on The Wheel space station.
The effects produced by narco-mist bear similarities to those of bacta, another substance that could be administered as a misty spray.