we did the 20x and my wife thought her reality collapsed around her and she would never return to what she knew previously as reality
she started trying to run away from the new reality, we had to restrain her and shit, it was CRAZY
she said it was the hardest she had ever tripped on anything, and from what she described it sounded a lot like DMT
http://www.erowid.org/experiences/su...ivinorum.shtml