After the first three hours, the peak begins. Users have extreme visual hallucinations. Some report that everything seems like it is in motion, and colors are vivid. Users sometimes see things that are not there. Mental changes are the most intense.
Users often experience extreme mental stages, going from periods of giddiness, to extreme insight.
Users often may have conversations that do not make a whole lot of sense to an outside observer. They also show extreme paranoia, especially when put in a situation with people who are not tripping. The mind becomes extremely sensitive to its surroundings, and any change or disruption can extremely upset a user. The thoughts and fears of someone on a bad trip may make no sense to others, but make perfect sense to them. A bad trip can cause a user to react so violently that he hurts himself or other people.