How does the internal family systems model of psychotherapy support clients in the integration of their psychedelic experiences? An interpretative phenomenological analysis of clients' testimonies
Journal of Psychedelic Studies February 19, 2026 Sophie Sarrassat, Suzannah Hill
People who have used psychedelics for mental health issues sometimes seek therapy afterward to integrate the experience. Internal Family Systems (IFS) therapy, a model that views the mind as composed of distinct sub-personalities or 'parts,' may help. Interviews with four individuals who used IFS therapy for psychedelic integration revealed that integration is a challenging, time-consuming transformational process. Participants found IFS helpful because it provides a language to describe internal experiences, treats those experiences seriously, and emphasizes self-love, though they cautioned that it is possible to lose sight of one's core self. The therapeutic relationship was also important. The findings suggest IFS can support psychedelic integration, but more diverse research is needed.