The labyrinth at it's foundation is a place of torture. It heals Asterion, so that it can hurt him again. Outside of that, I'm afraid there is no such magical healing properties. The whole "place of healing" thing is more a wish Asterion has to help those who get lost.
The wine that heals Asterion either has no effect on others or is a lethal poison to them. I forget which is the case. In the ruthless route there is one such lethal poison Argos helped confect, but it's been a long time since I've read that. Not sure if that was just an elaborate job to get another bottle of the wine to summon faster.