Psycholytic therapy is a historical approach to psychotherapy that pairs low doses of psychedelic substances with ongoing talk therapy. The aim is to gently broaden awareness so clients can explore thoughts, emotions, and memories while staying grounded.
Unlike high-dose psychedelic-assisted therapy that seeks a single intense experience, psycholytic work uses milder effects across repeated sessions to support gradual insight. The concept emerged in the 1950s and 1960s, and practices varied among clinicians.
Today the term is rarely used. Similar work is sometimes described as low-dose psychedelic sessions in supportive settings. It is not an approved medical treatment, evidence is still emerging, and legal status varies by location. I cannot verify specific efficacy claims.
For a concise example of how a low-dose session may be framed, see this overview of a low-dose truffle ceremony. Hope this helps.