How many people have the tripsitters and trip therapists guided during psychedelic sessions?
Up to the end of August 2025, the Triptherapie supervisors have collectively approximately 3,100 clients supported during psychedelic therapies. Below is an overview of the number of guided sessions per person, with an explanation of their background and working methods:


Marcel is by far the most experienced facilitator within Triptherapie. With a background in chemistry, biochemistry, and neurochemistry, he has been guiding people with diverse needs since 2011, such as trauma, depression, addiction, or spiritual deepening. His style is both analytical and intuitive, with a strong focus on safety, preparation, and integration. He works with psilocybin, MDMA, LSD, psiloflora, and psilohuasca, among others.

Ronald is a psychosocial therapist specializing in IFS, psychodrama, and trauma integration. His approach is structured yet gentle and tailored to deep processes such as PTSD, anxiety disorders, or depression. Ronald also facilitates integration days where psychotherapy and psychedelics come together.

Janneke is an empathetic and intuitive guide with a background in applied psychology and OERsterk lifestyle coaching. Her style is loving, feminine, and safe. She focuses on themes such as trauma, self-image, and rediscovering life energy. She works frequently with truffles and MDMA analogues.

Sascha is a clinical psychologist with years of experience in mental healthcare. Her sessions are praised for their calm, depth, and safety. She works with people with childhood trauma, anxiety disorders, and burnout, among others. Her approach is holistic, with an eye for both psychology and spirituality.

Reineke is a psychologist and body-oriented therapist with a strong sensitivity to energetic work. She conducts sessions at her fixed location in Schiedam or at clients' homes. She is particularly well-suited for people experiencing stress, burnout, grief, and a desire for a renewed connection with the body.

Gijs is a mindfulness trainer, compassion therapist, and experienced facilitator of inner processes. His background in mental healthcare, meditation, ACT, and non-dual therapy makes him a very conscious and calm guide. His sessions are often described as calm, insightful, and healing.
Do you want to know who suits you best? Then fill out the intake form in. You will then receive a personal proposal based on your wishes, health, and preferences.