Use: Puts the imbiber in a slumber where they face and defeat their darkest fears. During that time the imbiber restores 5400 health and mana, but they are defenseless.
Patch 3.0.8 (2009-01-20): Potion of Nightmares functionality changed. You can now move to interrupt the effect, and damage taken is no longer increased while you are under the effects of this potion.