Adjunctive psychosocial interventions for bipolar disorder target many of the issues that are not addressed by medication alone, including non-adherence, efficacy-effectiveness gap and functionality. Psychosocial interventions have been found to reduce relapse, particularly for the depressive pole, and improve functionality. Approaches such as psychoeducation, cognitive behaviour therapy, interpersonal and social rhythm therapy, and family therapy have shown benefits as adjunctive treatments. Each of the various psychosocial interventions has a unique emphasis, but they share common elements. These include: providing information and education; developing a personal understanding of the illness, such as triggers and early warning signs; having prepared strategies in place for early intervention, should symptoms of illness develop; and promoting a collaborative approach. Evidence to date supports the use of adjunctive psychosocial interventions in the management of bipolar disorder.