PMID- 32478631 OWN - NLM STAT- MEDLINE DCOM- 20210120 LR - 20220415 IS - 1751-2441 (Electronic) IS - 1751-2433 (Linking) VI - 13 IP - 6 DP - 2020 Jun TI - Integrating psychotherapy and psychopharmacology: psychedelic-assisted psychotherapy and other combined treatments. PG - 655-670 LID - 10.1080/17512433.2020.1772054 [doi] AB - INTRODUCTION: Combinations of psychotherapy with antidepressants are gold-standard psychiatric treatments. They operate through complex and interactional mechanisms, not unlike the reemergent paradigm of psychedelic-assisted psychotherapy, which promising research suggests may also be highly effective in even challenging populations. AREAS COVERED: We review the therapeutic mechanisms behind both conventional and psychedelic paradigms, including the evolution of this knowledge and the associated explanatory frameworks. We explore how psychedelics have provided insights about psychiatric illnesses and treatments over the past decades. We discuss limitations to early explanatory models while highlighting and comparing the psychological and biological mechanisms underlying many psychiatric treatments. METHODS: A narrative review was conducted based on a search in Medline/Pubmed up to January 1(st), 2020, and iterative retrieval of references from recent reviews and clinical trials. EXPERT OPINION: The contextual model of the common factors of psychotherapy provides a powerful perspective on psychotherapy, antidepressants, and psychedelics, as well as 3,4-methylenedioxymethamphetamine (MDMA) and ketamine. It aligns well with key tenets of psychedelic-assisted psychotherapy. Conventional antidepressants and especially psychedelics may improve the efficacy of psychotherapy via neurochemical changes and increased environmental sensitivity. Combined treatments hold significant promise for advancing the knowledge and treatment of many forms of psychopathology. FAU - Greenway, Kyle T AU - Greenway KT AUID- ORCID: 0000-0002-7829-493X AD - Department of Psychiatry, McGill University , Montreal, Quebec, Canada. FAU - Garel, Nicolas AU - Garel N AUID- ORCID: 0000-0002-4031-9943 AD - Department of Psychiatry, McGill University , Montreal, Quebec, Canada. FAU - Jerome, Lisa AU - Jerome L AUID- ORCID: 0000-0001-6209-8750 AD - Data Services, MAPS Public Benefit Corporation. FAU - Feduccia, Allison A AU - Feduccia AA AUID- ORCID: 0000-0002-6918-0738 AD - Project New Day, Psychedelic.Support. LA - eng PT - Journal Article PT - Review DEP - 20200601 PL - England TA - Expert Rev Clin Pharmacol JT - Expert review of clinical pharmacology JID - 101278296 RN - 0 (Hallucinogens) SB - IM MH - Animals MH - Combined Modality Therapy MH - Hallucinogens/*administration & dosage MH - Humans MH - Mental Disorders/physiopathology/*therapy MH - Psychotherapy/*methods OTO - NOTNLM OT - Psychedelics OT - antidepressants OT - ketamine OT - ketamine-assisted psychotherapy OT - lsd OT - mdma OT - mdma-assisted psychotherapy OT - psilocybin OT - psychedelic-assisted psychotherapy OT - psychiatry OT - psychotherapy EDAT- 2020/06/02 06:00 MHDA- 2021/01/21 06:00 CRDT- 2020/06/02 06:00 PHST- 2020/06/02 06:00 [pubmed] PHST- 2021/01/21 06:00 [medline] PHST- 2020/06/02 06:00 [entrez] AID - 10.1080/17512433.2020.1772054 [doi] PST - ppublish SO - Expert Rev Clin Pharmacol. 2020 Jun;13(6):655-670. doi: 10.1080/17512433.2020.1772054. Epub 2020 Jun 1.