5-HT2C/2B receptor agonist/partial agonist; displays some activity at 5-HT2A and 5-HT1 receptors. pEC50 values are 7.09, 7.2, 6.65, 5.9 and 6.5 for human recombinant 5-HT2C, 2B and 2A, bovine 5-HT1A and rat 5-HT1B receptors respectively. Suppresses locomotor activity in rats in vivo.