Kapitel 4: Amfetaminer, ecstasy och hallucinogena ämnen ###>Chapter 4: Amphetamines, ecstasy and hallucinogenic substances of ecstasy among this age group is estimated at between 1.0¢% and 3.7¢% in the majority of countries, though there is a considerable difference between the lowest national estimate at 0.3¢% and the highest at 11.3¢%.