The Water of life Potion is an Item in Kingdom Come: Deliverance and can be made with Alchemy.
Description
A drink that lacks little, for it would raise even the dead from the grave! It gives new strength to the wounded, though they be at death's door. It heals wounds and restores strength even to broken bones. Remember, though, that the potion is not enough and you should still seek the treatment of a physician.
Effect
Restores health greatly and dispels certain negative effects.