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Guide VII-043

Underground psycholytic group therapy in Switzerland (Meckel Fischer)

Friederike Meckel Fischer1999Zurich
A 30 · L 43 · M 2716 interventions in the Trinity explorer16 described for recognition only
Client cardCompare
[source: …] where a claim comes from[uncertain] not confirmed in a primary source[synthesis] the writer's reconstruction

1. Introduction

Version followed: the practice as Friederike Meckel Fischer herself describes it in Sessa & Meckel Fischer (2015, Drug Science, Policy and Law) and in interviews (Mosaic/Sam Wong 2016; Chacruna/Reilly Capps 2021). This was checked against Swiss court reporting (20 Minuten, 27 January 2010 and 5 July 2010), against international journalism (Stephen Buranyi, LRB blog and Vice, 2015) and against an infoSekta dossier built on a former participant's interview. Verified from court reporting: the court (Bezirksgericht Zürich), the date of the verdict, the charges and sentence, the period covered by the indictment, the number of participants and the husband's separate penalty. Anything found only in the judgment itself or in other Swiss papers (NZZ, Tages-Anzeiger) is not covered here [uncertain]. Her book is not used directly: the English edition is Therapy with Substance (Muswell Hill Press, 2015) and the German edition is Therapie mit Substanz (Nachtschatten Verlag, which a retailer lists as 2016). What the book says appears here only through publisher or event pages, attributed to her.

HISTORICAL ACCOUNT, NOT FOR USE. This entry is not a therapy model. It describes one illegal, underground practice run by a named living person. It contains no doses, sourcing, routes or administration details. Every claim is attributed. Her own account is a self-report by an interested party; its outcome claims were never independently measured, as her co-author also says [source: Sessa & Meckel Fischer 2015].

  • Who. Friederike Meckel Fischer was born in Germany in 1947 and trained as a physician, first in industrial medicine and then in psychodynamic psychotherapy. She later trained in systemic and family-constellation work, as a Holotropic Breathwork facilitator with Stanislav Grof, and in a Swiss psycholytic-therapy training group in the late 1980s or early 1990s. She opened a private practice in Zurich in 1997 [source: CZEPS 2016 talk biography; Sessa & Meckel Fischer 2015]. Mosaic and 20 Minuten (January 2010) both report that she trained with the Swiss psychiatrist Samuel Widmer. 20 Minuten calls Widmer a "Guru" and links him to the Kirschblütengemeinschaft in Solothurn. Her publisher's page says she trained in psycholytic therapy with the Swiss society SÄPT under Widmer [source: Wong/Mosaic 2016; 20 Minuten 27 Jan 2010; OPEN Foundation book page]. In 2010, Swiss reports gave her age as 62 [source: 20 Minuten 2010].
  • What. She says she worked underground with psychoactive substances for about ten years, ending in 2009. She worked first with individual clients and later with ongoing groups. Per the CZEPS biography and the 2015 paper, the substances were MDMA, LSD, 2-CB and psilocybin [source: CZEPS 2016; Sessa & Meckel Fischer 2015]. Court reporting says the indictment covered about 45 group weekends from mid-2004 to August 2008, with about 60 participants from affluent circles (among them lawyers and doctors). It also listed mescaline among the substances [source: 20 Minuten 5 July 2010]. On location, 20 Minuten places the weekends at a property in Zurich's Seefeld district and, in January 2010, her practice on the Zürichberg. Buranyi (LRB) writes of a "mountain villa" and Mosaic of her home. 20 Minuten (January 2010) reports groups of up to twelve people [source: 20 Minuten 2010; Buranyi/LRB 2015; Wong/Mosaic 2016].
  • Core idea of change (her claim). She describes the substances as non-specific "consciousness amplifiers" within psycholytic psychotherapy. In this tradition, an altered state helps a client reach and re-experience difficult material, which is then worked through in talk-based integration [source: CZEPS 2016 abstract of her talk]. She held that a difficult experience can be useful if it is worked through, and that without a proper setting, a skilled therapist and client commitment, "a bad trip is just a bad trip" (paraphrased by Mosaic) [source: Wong/Mosaic 2016].
  • Outcome. She and Mosaic say police raided her home in October 2009, after a former client complained, and arrested her and her husband [source: Sessa & Meckel Fischer 2015; Chacruna 2021; Wong/Mosaic 2016]. On 5 July 2010 the Zurich District Court (Bezirksgericht Zürich, presiding judge Philippe Ernst) gave its verdict. It rejected the charge of serious (aggravated) drug trafficking. It found that she had repeatedly supplied narcotics without authorisation over several years, in breach of the Narcotics Act. She received a 16-month suspended prison sentence and a CHF 2,000 fine [source: 20 Minuten 5 July 2010]. Her own account and Chacruna describe the conviction as concerning LSD. The 20 Minuten report does not narrow it to LSD [uncertain] (details in the Harm account).
  • Why "contested". She, the defence and the court's rejection of the aggravated charge present the work as a careful therapeutic setting. 20 Minuten reports that the court accepted that patients' intake of LSD was controlled, and that the judge called her a kind of "Überzeugungstäterin" (someone who offends out of conviction) [source: 20 Minuten 5 July 2010]. The complainant alleged "brainwashing". She and her co-author say parts of the press called the group a "sex and drug sect", and they call such claims false [source: Sessa & Meckel Fischer 2015; Chacruna 2021]. Neither 20 Minuten report mentions sexual misconduct or a sect. A Tages-Anzeiger headline calls her the "Drogenheilerin vom Zürichberg" (drug healer of the Zürichberg). No source used here reports a court finding of sexual misconduct [uncertain: the press items using the "sect" wording are unidentified].

2. Framework

Historical context [source: Gasser 1995, MAPS Bulletin; Buranyi/Vice 2015].

  • The Swiss Medical Society for Psycholytic Therapy (SÄPT) promoted the method and trained therapists.
  • From 1988 to 1993 the Swiss authorities let a small number of SÄPT psychiatrists use MDMA and LSD with patients. Vice says five; 20 Minuten (January 2010) says six [uncertain]. Their method combined Leuner's continuous verbal psycholytic therapy with Grof's use of music and silence.
  • The permits ended in 1993. 20 Minuten (January 2010) reports that the programme was stopped after a patient died during treatment; Vice gives no reason [source: 20 Minuten 27 Jan 2010; Buranyi/Vice 2015]. Gasser's follow-up of former patients (121 of 171 evaluated) was descriptive and uncontrolled.
  • Meckel Fischer's practice came after this period and had no permit. It was illegal throughout [source: Sessa & Meckel Fischer 2015; Wong/Mosaic 2016].

Phases of her practice, as she describes them (historical; general terms only) [source: Sessa & Meckel Fischer 2015; Chacruna 2021; Wong/Mosaic 2016]:

  1. Ordinary (non-drug) psychotherapy. Clients came mostly by word of mouth and usually had non-drug therapy with her first.
  2. Selection. About 4% of her clients moved on to substance-assisted work. These were clients she judged to be "stuck" in talk therapy. No formal written exclusion criteria are published. Later she said she would never accept anyone with a history of psychosis.
  3. Psychoeducation and individual substance-assisted sessions. These continued until the client felt familiar with the state. She also used them to explain the group's rules and boundaries.
  4. Recurring weekend groups at her home:
    • Friday evening: dinner, group sharing and intention-setting.
    • Saturday: the substance-assisted group session.
    • Sunday: a non-drug integration meeting.
  5. Integration between weekends. Each participant sent a written report within about two weeks. A written protocol was the "entry ticket" to the next session, and optional individual non-drug sessions were available.
  • Progression. She described three stages, "Primary", "Middle" and "High School", in which clients gradually took over guiding their own inner work. No published criteria for moving between stages were found [uncertain].
  • Scale (self-reported). 97 clients had psycholytic therapy, 60 of them in groups. Participants were roughly half women and half men, aged 18 to 70, and many attended for several years. The reported cost was 300 to 400 Swiss francs per weekend.

Legal and regulatory status (as of the sources' dates):

  • Switzerland. LSD, MDMA and psilocybin are prohibited narcotics. Since 26 September 2014, physicians can apply to the Federal Office of Public Health (BAG) for an exceptional authorisation under Art. 8(5) of the Narcotics Act (BetmG). Authorisations are granted per patient and per substance, last one year, and are renewable. Conditions are a serious illness, conventional treatments exhausted, and an expected benefit. Up to the end of 2024, about 1,800 authorisations were granted and about 100 physicians carried out about 4,500 treatments [source: Aicher & Müller 2025].
  • Underground practice remains a criminal offence in Switzerland, as this case showed [source: Sessa & Meckel Fischer 2015].
  • Other jurisdictions (US Schedule I, German BtMG Annex I, Australia's 2023 authorised-prescriber scheme) are not covered here. Check them locally [uncertain].

3. Guiding principles

These are the principles she and her co-author state, followed by what a clinician today takes from each. None is an instruction to practise this method.

  • Set and setting decide the outcome [source: CZEPS 2016; Sessa & Meckel Fischer 2015]. Today: regulated programmes formalise this with screening, an emergency plan, supervision and documentation [source: Aicher & Müller 2025].
  • Only clients who are stuck, and only after long talk therapy [source: Sessa & Meckel Fischer 2015]. Today: selection without published exclusion criteria or independent review was a stated weakness. She later regretted not recognising personality disorders and couple conflicts [source: Chacruna 2021].
  • The client is responsible for themselves (part of the opening "promise") [source: Sessa & Meckel Fischer 2015]. Today: telling people in an altered state that they are self-responsible does not remove the duty of care that the leader carries [synthesis].
  • Observe, don't attach ("Empathic Observer", "Self-Reflecting I") [source: Sessa & Meckel Fischer 2015]. Today: this is close to mindfulness-style decentring, which is legitimate in integration work without substances [synthesis].
  • Stay connected to the adult part during trauma work [source: Sessa & Meckel Fischer 2015]. Today: this matches standard trauma-stabilisation practice [synthesis].
  • Delay major life decisions after sessions [source: Sessa & Meckel Fischer 2015]. Today: this is sound integration advice and worth reusing [synthesis].
  • Secrecy about people, place and "holy medicine" [source: Sessa & Meckel Fischer 2015]. Today: this is a red flag. It blocks help-seeking and complaints (see Harm account) [synthesis].
  • Psychotherapist, not spiritual teacher. Gasser (1995) reported this as the self-understanding of the earlier licensed SÄPT therapists; it is not her own statement [source: Gasser 1995]. Today: use it as a test of any group [synthesis].
  • Work through your own material; don't practise in isolation. These are her lessons in hindsight: she wished for a practitioners' association and had no supervision [source: Chacruna 2021; Sessa & Meckel Fischer 2015]. Today: supervision and peer consultation are standard in the Swiss authorised programme [source: Aicher & Müller 2025].

4. Intervention inventory

These are the components she and Sessa describe, given as history so that clinicians can recognise them. Not for use with substances. The steps below are deliberately general: no doses, timing, routes or administration details. Each "Example language" is wording for a clinician today, working without substances with a former participant or a curious client; it is not her wording. Sources for this section: Sessa & Meckel Fischer 2015, unless stated otherwise.

4.1 Prior talk therapy and selection

  • Purpose: to find clients who were "stuck" in non-drug therapy and judged ready.
  • Steps (historical):
    • She ran ordinary psychotherapy first.
    • Selection was her personal judgement; about 4% of clients were invited.
    • No written exclusion criteria are published. In 2021 she said she would exclude anyone with a history of psychosis [source: Chacruna 2021].
  • Example language (illustrative, today): "Who decided you were ready for the group, and on what basis? Was anyone else involved in that decision?"
  • Watch for:
    • One person acting as gatekeeper, with no independent psychiatric or medical screening.
    • Being "chosen" can create indebtedness to the leader [synthesis].

4.2 Psychoeducation and individual sessions before the group

  • Purpose: to make the state familiar and to explain group rules before the client joined a group.
  • Steps (historical, general):
    • She gave information about what to expect.
    • She held individual substance-assisted sessions with her before group entry.
    • The group rules and boundaries were explained in these sessions.
  • Example language (illustrative, today): "What were you told about the risks, and was anything said about the legal situation?"
  • Watch for:
    • Informed consent given by one unlicensed provider with an interest in the outcome.
    • No information on legal risk to participants appears in the sources [uncertain].

4.3 Written protocol as "entry ticket"

  • Purpose: to make clients reflect on and integrate each session before the next one.
  • Steps (historical):
    • After each session the participant wrote a report and sent it within about two weeks.
    • A written protocol was required before entering the next session [source: Sessa & Meckel Fischer 2015; Chacruna 2021].
  • Example language (illustrative, today): "Would writing down what you remember help us sort what was insight from what was the group's interpretation?"
  • Watch for:
    • Reflective writing is legitimate.
    • Making it a condition of continued membership gives the leader gatekeeping power and a written record of clients' intimate material [synthesis].

4.4 Friday intention round

  • Purpose: to name current issues and set goals for the weekend.
  • Steps (historical): the group gathered on Friday evening for dinner, a long round of sharing about recent events, and individual intention-setting [source: Chacruna 2021; Wong/Mosaic 2016].
  • Example language (illustrative, today): "What did you hope to change when you went? Did that intention come from you or from the group?"
  • Watch for: intentions shaped by the group or the leader's agenda rather than the client's own [synthesis].

4.5 Opening "promise ritual"

  • Purpose (her account): to create safety and commitment.
  • Steps (historical): participants sat in a circle and made a spoken promise. It covered:
    • silence about the people, the place and the "holy medicine";
    • not harming oneself or others;
    • coming back "more healed and wiser";
    • taking personal responsibility [source: Sessa & Meckel Fischer 2015; Wong/Mosaic 2016 calls it a promise of secrecy].
  • Example language (illustrative, today): "Some groups ask for promises of silence. You are free to talk about anything here. A promise made to a group doesn't bind what you tell me."
  • Watch for: risk flag.
    • A secrecy vow combined with sacred language ("holy medicine") blocks outside help-seeking.
    • It frames anyone who talks as a betrayer. She later said a client "betrayed" her [source: CZEPS 2016].
    • This is a recognised feature of high-control groups [synthesis].

4.6 Opening silence and stillness instructions

  • Purpose: to turn attention inward.
  • Steps (historical): participants were told to lie still, keep silent and keep their eyes closed during the early part of the session. The session then moved through music to group work.
  • Example language (illustrative, today): "Were you able to say no to an instruction during a session? What would have happened if you had?"
  • Watch for: risk flag.
    • Inward focus is common in regulated protocols.
    • In an unregulated group, instructions given to people in heightened suggestibility can become compliance [synthesis].

4.7 Music

  • Purpose: to support and focus the group process.
  • Steps (historical):
    • She played music of varying styles and tempos to bring the group into focus.
    • This followed the earlier SÄPT method of alternating music with long silences [source: Sessa & Meckel Fischer 2015; Gasser 1995].
  • Example language (illustrative, today): "Does any music bring back that time? We can plan what to do if it does."
  • Watch for: music can act as a trauma or trip reminder for a former participant [synthesis].

4.8 "Where are you?" and the observing stance

  • Purpose: to help clients observe problems without becoming attached to them.
  • Steps (historical):
    • She asked "Where are you?" to orient clients.
    • She taught an "Empathic Observer" stance and a "Self-Reflecting I".
  • Example language (illustrative, today, without substances): "Notice the memory as if from a kind, slightly distant seat. What do you see from there?"
  • Watch for:
    • This stance can transfer usefully to ordinary integration work.
    • Check that it has not become avoidance or dissociation [synthesis].

4.9 Trauma work with body-based elements

  • Purpose: to process traumatic memories that came up during sessions.
  • Steps (historical):
    • Work stayed connected to the client's adult part and aimed to give a sense of safety.
    • It included body-based work. Mosaic reports that participants often relived traumatic memories [source: Sessa & Meckel Fischer 2015; Wong/Mosaic 2016].
    • No touch policy is published [uncertain].
  • Example language (illustrative, today): "Was there physical contact in sessions? Was it explained, and could you refuse it?"
  • Watch for: risk flag.
    • Touch and body work in altered states without a written consent policy or a second therapist is a known risk for boundary violations [synthesis].
    • Vice (Buranyi, November 2015) does not name the therapist it describes: a female student of Samuel Widmer who ran a group in a "secluded mountain villa" and received a suspended sentence. In Vice, the journalist Hans-Peter Waldrich, who observed the group, describes "unprofessional conduct", and former patients describe "frequent physical contact". The same author's LRB blog names Meckel Fischer and describes the same villa, so this very probably refers to her. Even so, Vice's arrest date ("early 2009") conflicts with her account (October 2009). An infoSekta dossier (a Swiss advice centre on problematic groups) interviews a pseudonymous former participant of a Zurich group led by "Dr. med. FM"; she describes intense physical closeness and shared nudity, but says it was "ohne sexuelle Ausrichtung" (without sexual orientation) [source: infoSekta dossier, updated 2010]. None of these allegations appears in the 20 Minuten court reports, and none was tested in court [uncertain].

4.10 "Modified constellation work" and role-play

  • Purpose: to rehearse family conflicts in character.
  • Steps (historical):
    • Group members, or her husband, played a client's parent or relative.
    • The client then held a dialogue with them in character.
    • Her husband, who was not a therapist, observed most sessions [source: Sessa & Meckel Fischer 2015; Wong/Mosaic 2016].
  • Example language (illustrative, today): "Who else held a role in the group, the leader's family for example, and how did that affect what you felt able to say?"
  • Watch for: risk flag.
    • An untrained family member of the leader takes a therapeutic role.
    • Peers play intimate roles while in an altered state.
    • This creates dual relationships and confidentiality problems [synthesis].

4.11 Peer support and the therapist in the circle

  • Purpose: mutual support within the group.
  • Steps (historical): group members supported one another, and the therapist took part alongside clients. Buranyi (LRB) writes that the therapist and patients took MDMA and LSD. In Vice, Waldrich says the therapist should not take drugs as well, "but she did". The former participant interviewed by infoSekta likewise says nobody in the sessions was sober, including the leader, who claimed she still kept an overview [source: infoSekta dossier, updated 2010]. Neither her paper nor the 20 Minuten court reports confirm this, and it was not adjudicated [uncertain]. Risk flag: a leader in an altered state cannot keep a duty of care [synthesis].
  • Example language (illustrative, today): "How easy was it to disagree with the group or with her?"
  • Watch for: loyalty pressure and blurred leader/member roles [synthesis].

4.12 Sunday integration meeting

  • Purpose: to make sense of the experience and apply it to daily life.
  • Steps (historical): a non-drug group discussion the following day [source: Sessa & Meckel Fischer 2015; Wong/Mosaic 2016].
  • Example language (illustrative, today): "Which of the meanings you took away still fit for you now, and which were the group's?"
  • Watch for: integration under the group's interpretive frame, with no outside perspective [synthesis].

4.13 Between-session follow-up and availability

  • Purpose: continuity of care.
  • Steps (historical): written reports within about two weeks, optional individual non-drug sessions, and her stated continuous availability.
  • Example language (illustrative, today): "When things were hard between weekends, who could you call besides her?"
  • Watch for:
    • One person was the only source of help.
    • Clients had no outside clinician and no complaints route [synthesis].

4.14 Advice to delay major life decisions

  • Purpose: to protect clients from impulsive changes after sessions.
  • Steps (historical): clients were encouraged to wait until they had more experience before major decisions.
  • Example language (illustrative, today): "Let's give this decision a few weeks and look at it again outside the glow of the experience."
  • Watch for:
    • This is sound advice.
    • Note that the 2009 complaint arose after a participant's marriage ended following his therapy [source: Sessa & Meckel Fischer 2015].

4.15 Safety arrangements and the no-solo-departure rule

  • Purpose (her account): physical safety.
  • Steps (historical):
    • At least one doctor was in the group.
    • Emergency equipment and supplies were kept on site.
    • She stayed in contact with researchers and with SÄPT [source: Chacruna 2021].
    • Participants could not leave alone after the session [source: Sessa & Meckel Fischer 2015].
    • Medical monitoring belongs to medical staff and is not described technically here.
  • Example language (illustrative, today): "If someone had become medically unwell, what would the plan have been? Could an ambulance have been called without fear of the police?"
  • Watch for:
    • Illegality creates a structural disincentive to call emergency services [synthesis].
    • Sessa cites the 2009 Berlin underground-group deaths (a separate case) as an example of the dangers of unregulated settings [source: Sessa & Meckel Fischer 2015; Buranyi/Vice 2015].

4.16 Three-stage progression

  • Purpose (her account): to move clients towards guiding their own inner work.
  • Steps (historical): she named the stages "Primary", "Middle" and "High School". Transition criteria were not found [uncertain].
  • Example language (illustrative, today): "Did it feel as if you were always one level away from finishing?"
  • Watch for: a long progression ladder with no defined end can keep people attending for years [synthesis].

5. Handling problems

There are two kinds of problem here: those her own account names, and those a clinician meets today with former participants or with clients who want something similar.

Problems named in the sources (her hindsight):

  • Personality disorders became visible only under stress. She says she did not always recognise narcissistic, bipolar or borderline presentations until the session [source: Chacruna 2021]. Response today: a structured psychiatric assessment by someone independent of any group, before any decision [synthesis].
  • Couple conflict not explored. She says she should have looked more closely at the fights a couple were having [source: Chacruna 2021]. Response: when one partner's therapy is destabilising a relationship, offer couple or individual support to the other partner through a separate clinician [synthesis].
  • Boundary blur. She let a former client's ex-husband stay briefly at her home. The authors say this may have contributed to the complaint [source: Sessa & Meckel Fischer 2015]. Response: no residence, social or financial ties with clients [synthesis].
  • Isolation. She had no peer supervision and no route for legal, clinical or insurance help [source: Sessa & Meckel Fischer 2015]. Response: supervision is non-negotiable. Swiss authorised programmes treat it as standard [source: Aicher & Müller 2025].
  • A client overwhelmed with nowhere to turn but the police. Confidentiality rested on trust and the promise ritual, so a distressed client had no internal complaint route [source: Sessa & Meckel Fischer 2015].

Problems a clinician meets today [synthesis unless tagged]:

  • Former participant ashamed or afraid of prosecution.
    • Say clearly what your confidentiality covers and its limits under your jurisdiction's law and code.
    • Do not question them for names or locations.
    • Refer to independent legal advice if they ask about their own exposure. Whether other participants were questioned or charged is not documented in the sources used here [uncertain].
  • Loyalty conflict or feeling bound by the secrecy vow.
    • Name the vow as something the group asked for, not a clinical requirement.
    • Let the client set the pace of disclosure.
    • Example (illustrative): "You can tell me as much or as little as you want. Nothing here depends on breaking or keeping that promise."
  • Lingering destabilisation (anxiety, intrusive memories, derealisation, perceptual changes, mood elevation). Screen for psychosis and mania, and refer for psychiatric assessment where indicated. Use grounding and stabilisation before any processing.
  • Grief for the lost community, or idealisation of the leader. Validate what was valuable without endorsing the structure, and explore what they needed that the group provided.
  • Secondary trauma from the raid, the trial or the media coverage. She herself reports lasting fear when the doorbell rings unexpectedly [source: Chacruna 2021]. Participants may have similar reactions. Assess for PTSD symptoms linked to these events.
  • Client asks you to find or join an underground group.
    • Do not refer to illegal providers or facilitate use.
    • Offer harm-reduction education in general terms, a psychiatric and medical screen, and information on legal routes: trials, or the Swiss Art. 8(5) BetmG pathway via a physician [source: Aicher & Müller 2025; Gorman et al. 2021, abstract only].
    • Keep integration support available whatever they decide.
  • Client currently in such a group and being pressured. Work through the red flags in the Harm account together. Plan safe exit steps and an outside support person, and make sure the client knows how to reach emergency care.
  • Clinician pressured to collude (asked to "prepare" clients or receive referrals). Decline, document, and seek ethics consultation.

Harm account

This section concerns a named living person, and each claim is attributed to its source. Two contemporaneous Swiss court reports (20 Minuten, 27 January and 5 July 2010) verify the court, the verdict date, the charges and outcome, the sentence, the period of the indictment, the number of participants and the husband's penalty. The judgment itself and the NZZ and Tages-Anzeiger reports are not used. Details beyond the verified items rest on her co-authored paper, interviews and international journalism [uncertain].

What was actually done

  • Training and practice, before 2009.
    • She trained in psycholytic therapy in Switzerland in the late 1980s or early 1990s and opened a private practice in Zurich in 1997 [source: Sessa & Meckel Fischer 2015; CZEPS 2016].
    • She worked underground for about ten years, first with individuals and then with ongoing weekend groups [source: CZEPS 2016; Wong/Mosaic 2016]. The indictment covered about 45 group weekends between mid-2004 and August 2008 at a property in Zurich's Seefeld district. About 60 participants paid CHF 300 per weekend, including lodging and meals [source: 20 Minuten 5 July 2010].
    • She says 97 clients had substance-assisted therapy, 60 of them in groups [source: Sessa & Meckel Fischer 2015].
  • What participants experienced (as she describes it; see section 4). Over a weekend:
    • a Friday evening of sharing;
    • a spoken promise covering secrecy and personal responsibility;
    • substance-assisted group work with silence, music, individual interventions, body-based trauma work, and role-play in which group members or her non-therapist husband played relatives;
    • a Sunday integration meeting;
    • written reports, which were the condition for attending again.
  • The complaint. A former client complained after her husband left her following his therapy, and claimed the therapist had "brainwashed" him [source: Sessa & Meckel Fischer 2015; Chacruna 2021]. On where he went, Sessa & Meckel Fischer say he stayed briefly at the therapist's home. Buranyi (LRB) says he moved in with the couple. 20 Minuten says the client went to the media and to the prosecutors about two years before the trial [source: Buranyi/LRB 2015; 20 Minuten 5 July 2010].
  • Investigation and raid.
    • Police surveilled the group, for about a year according to Chacruna, including interception of phone and email according to Sessa & Meckel Fischer.
    • On 29 October 2009 about ten officers raided the house. They found MDMA and LSD and seized documents and computers.
    • She and her husband were held in separate prisons for about 13 days and interrogated. Her account says no evidence of dealing was found [source: Chacruna 2021; Sessa & Meckel Fischer 2015; Wong/Mosaic 2016 gives 13 days]. The court later found repeated unauthorised supply to participants, though not serious trafficking [source: 20 Minuten 5 July 2010]. 20 Minuten (January 2010) confirms only that the couple were detained for a time [source: 20 Minuten 27 Jan 2010].
  • Trial, Zurich District Court (Bezirksgericht Zürich), presiding judge Philippe Ernst; verdict reported on 5 July 2010 [source: 20 Minuten 5 July 2010].
    • The prosecution charged serious drug trafficking. It asked for a 24-month suspended sentence, a CHF 10,000 fine and a CHF 162,000 compensation claim (as 20 Minuten reports it). The indictment listed LSD, ecstasy (MDMA), mescaline, psilocybin and 2-CB [source: 20 Minuten 5 July 2010]. This conflicts with Mosaic's statement that MDMA was not part of the prosecution's case. Mosaic also says the aggravated charge carried a theoretical maximum of up to 20 years [source: Wong/Mosaic 2016] [uncertain].
    • Defence witnesses, including psycholytic therapists and neuroscientists, testified.
    • The court rejected the serious-trafficking charge. It found clear breaches of the Narcotics Act through repeated unauthorised supply over several years, accepted that patients' intake of LSD was controlled, and dropped the compensation claim for lack of proof [source: 20 Minuten 5 July 2010]. She said she had acted "in guter Absicht" (in good faith), and her lawyer sought full acquittal, arguing that no one was harmed [source: 20 Minuten 5 July 2010]. Her side's further statement that the court accepted clients' consent in a therapeutic context is not in the 20 Minuten court report. Chacruna's wording for the conviction is possession and trafficking [source: Sessa & Meckel Fischer 2015; Chacruna 2021] [uncertain].
    • Her sentence: a 16-month suspended prison sentence and a CHF 2,000 fine [source: 20 Minuten 5 July 2010]. The two-year probation period comes from her account [source: Sessa & Meckel Fischer 2015; Wong/Mosaic 2016].
    • Her husband's penalty: 20 Minuten describes him as a Zurich business lawyer. He had already been convicted of complicity by summary penalty order (Strafbefehl), receiving a suspended monetary penalty and a fine of about CHF 10,000 [source: 20 Minuten 5 July 2010]. Her account adds two years' probation [source: Sessa & Meckel Fischer 2015].
    • [source: 20 Minuten 5 July 2010 for the court, charges, verdict and sentences; Sessa & Meckel Fischer 2015, Wong/Mosaic 2016 and Chacruna 2021 for her account]
  • Aftermath.
    • After the Zurich health authority threatened to remove her licence, she gave up her qualification as a psychotherapist [source: Sessa & Meckel Fischer 2015]. Buranyi (LRB) says she had to give up her medical licence [source: Buranyi/LRB 2015]. The exact regulatory step is unverified [uncertain].
    • She and her co-author say press coverage called her a "drug healer" and the group a "sex and drug sect", and she calls these claims false [source: Chacruna 2021; Sessa & Meckel Fischer 2015]. A Tages-Anzeiger headline does call her the "Drogenheilerin vom Zürichberg". The "sect" wording does not appear in the 20 Minuten reports [uncertain].
    • She later gave talks, including at Breaking Convention in 2015 according to Buranyi. She published her book in English (Therapy with Substance, Muswell Hill Press, 2015) and in German (Therapie mit Substanz, Nachtschatten Verlag) [source: CZEPS 2016; Buranyi/LRB 2015; OPEN Foundation book page; retailer listing]. Her publisher's page says she practised until a client reported her, and that having been convicted let her describe her work without fear of a further conviction (her claim, via the publisher).
  • Unverified or conflicting items [uncertain]:
    • Wire report, now largely resolved. A Pharmacy Daily item of 6 July 2010 reports that a Zurich court gave a 16-month suspended sentence to an unnamed 62-year-old psychotherapist, over sessions from 2004 to 2008 with about 60 doctors and lawyers and the same substances. This matches the 20 Minuten court report, so it is very probably this case. Two of its details conflict with Swiss reporting and are treated as errors: it calls the therapist male (20 Minuten: a woman), and it gives groups "of up to 60" at a time (20 Minuten: about 60 participants in total, in groups of up to twelve) [source: Pharmacy Daily 2010; 20 Minuten 2010].
    • Mosaic's 1993 licence remark, resolved. Mosaic mentions licences withdrawn around 1993 after a patient death. This refers to the end of the licensed SÄPT programme: 20 Minuten (January 2010) reports that programme was stopped in 1993 after a patient died during treatment. It does not refer to her practice, which began in 1997 [source: 20 Minuten 27 Jan 2010; Wong/Mosaic 2016].
    • Buranyi's Vice and LRB pieces conflict with the other sources. In Vice (November 2015) the therapist is unnamed and was arrested in "early 2009". In his LRB blog (2015) she is named and was arrested in "late 2009". Both pieces describe a "mountain villa". Her account gives 29 October 2009, and Swiss court reporting places the group in Zurich (Seefeld; Zürichberg). The Vice allegations (physical contact; the therapist also taking substances) come from a journalist and from unnamed former patients, and were not tested in court [uncertain].

How it caused harm

  • Documented outcome claims are self-reports. She and Sessa report no psychoses, hospitalisations or suicides among active clients. They also say there were no standardised measures and no independent follow-up [source: Sessa & Meckel Fischer 2015]. Absence of reported harm is not evidence of safety [synthesis].
  • Harms that are alleged but not adjudicated:
    • the complainant's allegation of "brainwashing" and the breakdown of her marriage;
    • press allegations of sexual and cult conduct, which she denies.
    • No source used here reports that any of these was proven. The 20 Minuten court reports mention no sexual or sect allegations. The defence argued that no one was harmed, and the court dropped the prosecution's compensation claim for lack of proof [source: Sessa & Meckel Fischer 2015; Chacruna 2021; 20 Minuten 5 July 2010]. The Vice allegations of physical contact and of the therapist taking substances herself are unadjudicated [source: Buranyi/Vice 2015] [uncertain].
  • Legal harm. She and her husband were arrested, detained, prosecuted, convicted, fined and stigmatised in the media. She reports lasting fear [source: Chacruna 2021]. The legal exposure of participants is not documented [uncertain].
  • Structural risks, as mechanisms [synthesis, drawing on the facts above]:
    • Secrecy vow and sacred framing. Participants could not seek outside help or complain without "betraying" the group. The only exit route available to the complainant was the police.
    • Therapist control in heightened-suggestibility states. One person selected clients, set the rules, conducted the sessions, interpreted the experiences and gatekept re-entry through the written reports.
    • Dual relationships. The sessions took place in the leader's home; her husband held a quasi-therapeutic role; a client's family member stayed in the house.
    • No external safeguards. There was no licence, ethics review, supervision, insurance or complaints body. Substances were of unverified quality. There was a disincentive to call emergency services.
    • Open-ended attendance. Many participants attended for several years, which risks dependence on the leader and the group.
  • Who was most at risk [synthesis, partly from her own hindsight in Chacruna 2021]:
    • people with undiagnosed personality disorders, bipolar disorder or psychosis risk;
    • couples in conflict;
    • isolated people for whom the group became their main community;
    • anyone whose job or immigration status made legal exposure catastrophic.

Recognising it today

Red flags in a group or a colleague's practice [synthesis]:

  • secrecy oaths, or promises not to reveal people, places or "medicine";
  • sessions in the leader's home;
  • the leader's partner or family in therapeutic roles;
  • written "entry tickets" or progress grades controlled by the leader;
  • a multi-year ladder of levels;
  • the leader is the only source of help between sessions;
  • complainants described as betrayers;
  • the law framed as illegitimate, so the rules don't apply;
  • no named supervisor, no written touch or consent policy, no emergency plan that includes calling an ambulance.

How legitimate versions differ:

  • Swiss authorised treatment runs under a per-patient BAG authorisation, with medical monitoring, an emergency plan, an available physician contact, safety-based selection, regular supervision and peer consultation, and documentation.
  • Group settings are used only with careful selection [source: Aicher & Müller 2025].
  • Integration groups also carry risks, and Cheung et al. (2024) propose ethical criteria for assessing them [source: Cheung et al. 2024] [uncertain: their specific criteria are not summarised here].

Language that can signal a rebranding [synthesis]:

  • "psycholytic circle", "medicine weekend", "consciousness work";
  • "it's legal in a ceremony" (check this);
  • "we have a doctor present", offered as a substitute for regulation.

What to do instead and how to help those harmed

  • Safer alternatives: regulated trials; in Switzerland, the physician-led Art. 8(5) BetmG limited-medical-use pathway [source: Aicher & Müller 2025]; evidence-based psychotherapies without substances; Psychedelic Harm Reduction and Integration (PHRI) for people who use psychedelics in any context [source: Gorman et al. 2021].
  • Assessment of former participants [synthesis]:
    • the timeline and number of years of involvement, without asking about doses;
    • current psychiatric symptoms, including psychosis, mania, dissociation, persistent perceptual changes and PTSD (including from the raid, trial or media);
    • relationship fallout;
    • remaining contact or loyalty to the group;
    • shame and fear of the law;
    • any boundary violations, including physical or sexual contact. Ask directly and neutrally.
  • Treatment [synthesis]:
    • stabilisation first;
    • trauma-focused therapy where indicated;
    • meaning-making that separates the client's own insights from the group's frame;
    • rebuilding outside relationships;
    • psychoeducation on high-control group dynamics.
  • Ethical, reporting and legal duties [synthesis; check local law]:
    • Past illegal drug use by a client is generally confidential.
    • Duties to warn or protect apply to imminent risk.
    • Current abuse of minors or dependent adults is reportable.
    • Sexual or other misconduct by a licensed professional can be reported by the client to the licensing authority (in Switzerland, the cantonal health authority). Support the client's choice; do not report on their behalf unless the law requires it.
    • Clinicians must not refer to, prepare clients for, or co-facilitate illegal sessions.

Sources

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