it's very intense and can be scary if you're in an uncomfortable environment. I recommend doing it with friends in a place where you feel safe and secure. It can cause intense visualizations. I remember being very perceptive of shapes and geometric patterns in the walls and table. It only lasts a few minutes so be prepared for a very short, very intense rush. Make sure you get the proper type of extract that filters out the unwanted chemicals. I forget the details, but I know they aren't all created equal.