Evidence map›Paper›PMID 27111702›Full record

SynthesisRevista brasileira de psiquiatria (Sao Paulo, Brazil : 1999)2016

Antidepressive and anxiolytic effects of ayahuasca: a systematic literature review of animal and human studies.

Rafael G Dos Santos, Flávia L Osório, José Alexandre S Crippa, Jaime E C Hallak

Open access · diamondAbstract readSystematic Review
In one paragraph

Synthesis in Revista brasileira de psiquiatria (Sao Paulo, Brazil : 1999), 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 42 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
42citing papers in PubMed, 2 pooled it
16.9field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

42 citing papers in PubMed, 2 syntheses or guidelines pooled it, 152 citations in OpenAlex.

  1. Effects of ayahuasca in preclinical studies with animals: a systematic review.Brazilian journal of medical and biological research = Revista brasileira de pesquisas medicas e biologica · 2025
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  4. Psychedelics in treatment-resistant depression: a comprehensive review of mechanisms, clinical evidence, and recommendations.Neuropsychiatrie : Klinik, Diagnostik, Therapie und Rehabilitation : Organ der Gesellschaft Osterreichischer Nervenarzte und Psychiater · 2026
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  20. Psychedelics in the treatment of unipolar and bipolar depression.International journal of bipolar disorders · 2022
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors at 3 institutions in 1 country.

Rafael G Dos SantosDepartamento de Neurociências e Ciências do Comportamento, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo (USP), Ribeirão Preto, SP, Brazil.
Flávia L OsórioDepartamento de Neurociências e Ciências do Comportamento, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo (USP), Ribeirão Preto, SP, Brazil.
José Alexandre S CrippaDepartamento de Neurociências e Ciências do Comportamento, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo (USP), Ribeirão Preto, SP, Brazil.
Jaime E C HallakDepartamento de Neurociências e Ciências do Comportamento, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo (USP), Ribeirão Preto, SP, Brazil.
Universidade de São Paulo · BRInstituto Nacional de Ciência e Tecnologia de Neurociência Translacional · BRInstituto Nacional de Tecnologia · BR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo conduct a systematic literature review of animal and human studies reporting anxiolytic or antidepressive effects of ayahuasca or some of its isolated alkaloids (dimethyltryptamine, harmine, tetrahydroharmine, and harmaline).

methodsPapers published until 3 April 2015 were retrieved from the PubMed, LILACS and SciELO databases following a comprehensive search strategy and using a predetermined set of criteria for article selection.

resultsFive hundred and fourteen studies were identified, of which 21 met the established criteria. Studies in animals have shown anxiolytic and antidepressive effects of ayahuasca, harmine, and harmaline, and experimental studies in humans and mental health assessments of experienced ayahuasca consumers also suggest that ayahuasca is associated with reductions in anxiety and depressive symptoms. A pilot study reported rapid antidepressive effects of a single ayahuasca dose in six patients with recurrent depression.

conclusionConsidering the need for new drugs that produce fewer adverse effects and are more effective in reducing anxiety and depression symptomatology, the described effects of ayahuasca and its alkaloids should be further investigated.

Indexed as

BanisteriopsisAnimalsAnti-Anxiety AgentsAntidepressive AgentsAnxietyDepressive DisorderHarmalineHarmineHumansMiceN,N-DimethyltryptamineRatsAnti-Anxiety AgentsAntidepressive AgentsHarmalineHarmineN,N-Dimethyltryptamine

Identifiers

PMID27111702
PMCPMC7115465
OpenAlexW2300458685

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.