Use of particular substituted heterocycle fused gamma-carboline compounds as pharmaceuticals for the treatment of agitation, aggressive behaviors, posttraumatic stress disorder or impulse control disorders. In an embodiment, the effective amount is about 1 mg to about 140 mg per dose per day, in another embodiment about 2.5 mg to about 100 mg, in another embodiment about 10 mg to about 100 mg per dose per day, in another embodiment about 10 mg to about 60 mg per dose per day, in another embodiment about 10 mg to about 40 mg per day, in another embodiment about 20 mg to about 40 mg per day, in another embodiment about 40-60 mg per day, in another embodiment, about 1mg-10mg per day.
Treatment of PTSD and impulse control disorders