Interpersonal Psychotherapy was conceived as a psychotherapeutic approach to treating Depression, but has since now been broadly used to treat many other disorders. It has also recently been adapted to delivery in the group setting, with both advantages and disadvantages as other group psychotherapies. This adaptation, first used by Wilfley and colleagues, maintained the main features of IPT, i.e. the central role of the interpersonal focus and identification of one (or two) out of four problem interpersonal areas (Grief; Role Transition; Role Disputes; Interpersonal Deficits). It also kept the active role of the therapist and individual patient within the group. To date, G-IPT has been used for several diseases (Eating Disorders not Otherwise Specified, Bulimia Nervosa, Depressive Disorder, Posttraumatic Stress Disorder) and several populations (Adolescents, Older People, Pregnant Women or "New-Mothers," Substance-abusing Female Prisoners). Although the overall quality of most of outcome studies is to date quite poor, the review of the current state of knowledge shows the G-IPT may be helpful and present a number of advantages to treat different psychiatric disorders in several populations of patients.