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Pilot study of the 5-HT 2A R agonist psilocybin in the treatment of tobacco addiction
Open accessAbstract
Despite suggestive early findings on the therapeutic use of hallucinogens in the treatment of substance use disorders, rigorous follow-up has not been conducted. To determine the safety and feasibility of psilocybin as an adjunct to tobacco smoking cessation treatment we conducted an open-label pilot study administering moderate (20 mg/70 kg) and high (30 mg/70 kg) doses of psilocybin within a structured 15-week smoking cessation treatment protocol. Participants were 15 psychiatrically healthy nicotine-dependent smokers (10 males; mean age of 51 years), with a mean of six previous lifetime quit attempts, and smoking a mean of 19 cigarettes per day for a mean of 31 years at intake. Biomarkers assessing smoking status, and self-report measures of smoking behavior demonstrated that 12 of 15 participants (80%) showed seven-day point prevalence abstinence at 6-month follow-up. The observed smoking cessation rate substantially exceeds rates commonly reported for other behavioral and/or pharmacological therapies (typically <35%). Although the open-label design does not allow for definitive conclusions regarding the efficacy of psilocybin, these findings suggest psilocybin may be a potentially efficacious adjunct to current smoking cessation treatment models. The present study illustrates a framework for future research on the efficacy and mechanisms of hallucinogen-facilitated treatment of addiction.
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“Psychedelic-assisted therapies currently offer one of the most robust experimental models for eliciting ST, frequently occasioning ego-dissolution and mystical-type experiences that are associated with sustained reductions in depression, anxiety, and addictive behaviors (97, 106).”
From The therapeutic role of self-transcendence in moral injury recovery: theory, mechanisms, and clinical implications (2026) · cites this paper as [106]
Experimental — accuracy not yet measuredThe source backs part of the claim, not all of it — or backs it for a different population, condition or comparison.
In the citing paper
“A single-arm pilot study of PAT to treat tobacco use disorder found 67% and 60% of people remained abstinent at 12 and ≥16 months of follow-up [54].”
From Psilocybin‐assisted psychotherapy for methamphetamine use disorder: A pilot open‐label safety and feasibility study. (2025) · cites this paper as [54]
Experimental — accuracy not yet measuredThe cited source says what the claim attributes to it.
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“These findings demonstrate the likely feasibility of conducting such treatment in a substance use disorder [25,54].”
From Psilocybin‐assisted psychotherapy for methamphetamine use disorder: A pilot open‐label safety and feasibility study. (2025) · cites this paper as [54]
In the citing paper
“In an open-label pilot study, 12 out of 15 treatment-seeking smokers were nicotine abstinent 6 months after two to three administrations of psilocybin (26).”
From Modulation of Social Cognition via Hallucinogens and “Entactogens” (2019) · cites this paper as [26]
In the citing paper
“Facilitating the reconnection with their social environment via increased emotional empathy may therefore contribute to clinical efficacy of hallucinogens shown in preliminary studies with addicted patients (24, 26).”
From Modulation of Social Cognition via Hallucinogens and “Entactogens” (2019) · cites this paper as [26]
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Cites
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“This 100- item questionnaire has previously been used to characterize the subjective effects of psilocybin (Griffiths et al., 2006, 2011).”
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“Several plausible mechanisms of hallucinogen-facilitated treatments have been proposed (Bogenschutz and Pommy, 2012; Carhart-Harris et al., 2012, 2014; Ross, 2012; Vollenweider and Kometer, 2010).”
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Cited by
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Items 601–700 of 914
Structural basis for psilocybin biosynthesis
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Psychedelic therapy in the Czech Republic: A theoretical concept or a realistic goal?
Postránecká, Z., Vejmola, Č., & Tylš, F. (2019) · Journal of Psychedelic Studies · doi:10.1556/2054.2019.003 · Cited by 7
“, 2015), tobacco (Johnson et al., 2014), opiates, and other substances (Brown, 2013; Thomas, Lucas, Capler, Tupper, & Martin, 2013).”
New Insights Into the Clinical and Nonclinical Effects of Psychedelic Substances
Forstmann, M., & Sagioglou, C. (2021) · European Psychologist · doi:10.1027/1016-9040/a000447 · Cited by 7
Neural Network Modulation of Ayahuasca: A Systematic Review of Human Studies
Santos, G. H. D. M., Rodrigues, L. S., Rocha, J. M., Rossi, G. N., Oña, G., Bouso, J. C., Hallak, J. E. C., & SANTOS, R. G. D. (2023) · Psychoactives · doi:10.3390/psychoactives2010006 · Cited by 7
Gold, N. D., Mallard, A. J., Hermann, J. C., Zeifman, R. J., Pagni, B. A., Bogenschutz, M. P., & Ross, S. (2023) · Journal of Palliative Medicine · doi:10.1089/jpm.2022.0604 · Cited by 6
“75,77 Multiple clinical trials have shown that PAP using psilocybin and the para-psychedelic compound, 3,4-methylenedioxymethamphetamine (MDMA) has promise in treating SUDs 31–33 and PTSD, 78 respectively.”
No time to lose: the current state of research in rapid-acting psychotherapeutics
Gordon, J. A., Volkow, N. D., & Koob, G. F. (2023) · Neuropsychopharmacology · doi:10.1038/s41386-023-01627-y · Cited by 6
“As of now only pilot studies have reported fast relief in some patients with substance use disorders for psylocibin [22], ketamine [23] and ibogaine [24], though the safety of these drugs in these patient populations still needs to be evaluated.”
BackgroundJohnstad, P. G. (2015) · Nordic Studies on Alcohol and Drugs · doi:10.1515/nsad-2015-0053 · Cited by 11
“…on substance dependence that is indicated both by older research from the 1960s and several recent clinical trials (Bogenschutz et al., 2015; Johnson et al., 2014; Schenberg et al., 2014; Thomas et al., 2013) are thus corroborated by the participants of this study, who furthermore perceive…”
ResultAdvancing elite athlete mental health treatment with psychedelic-assisted psychotherapy
Walton, C. C., & Liknaitzky, P. (2020) · Journal of Applied Sport Psychology · doi:10.1080/10413200.2020.1848941 · Cited by 6
“In small pilot trials, psilocybin has been shown to be efficacious in treating obsessive-compulsive disorder (Moreno et al., 2006), smoking addiction (Johnson et al., 2014) and alcohol dependence (Bogenschutz et al., 2015).”
BackgroundArgento, E., Capler, R., THOMAS, G. W., Lucas, P., & Tupper, K. W. (2021) · Springer eBooks · doi:10.1007/978-3-030-55688-4_10 · Cited by 6
Clifton, J. M., Belcher, A. M., Greenblatt, A. D., Welsh, C., Cole, T. O., & Davis, A. K. (2022) · Journal of Psychedelic Studies · doi:10.1556/2054.2022.00214 · Cited by 6
Dangerous plants in dermatology: Legal and controlled
Singh, D., Fisher, J., Shagalov, D. R., Varma, A., & Siegel, D. M. (2018) · Clinics in Dermatology · doi:10.1016/j.clindermatol.2018.03.013 · Cited by 6
Downey, A. E., Bradley, E., Lerche, A. S., O’Donovan, A., Krystal, A. D., & Woolley, J. D. (2024) · Psychedelic Medicine · doi:10.1089/psymed.2023.0051 · Cited by 5
“For example, two trials excluded individuals if a ‘‘family member’’ had a history of BD, 17,18 perhaps allowing for clinical discretion in determining exclusion of these participants.”
The Use of Classic Psychedelics for Depressive and Anxiety-Spectrum Disorders
Kim, V., Wilson, S. M., & Woesner, M. E. (2024) · Journal of Clinical Psychopharmacology · doi:10.1097/jcp.0000000000001941 · Cited by 7
Can the gut-brain axis provide insight into psilocybin's therapeutic value in reducing stress?
Kit, A., Conway, K., Makarowski, S., O'Regan, G., Allen, J., Shultz, S. R., Bodnar, T. S., & Christie, B. R. (2025) · Neurobiology of Stress · doi:10.1016/j.ynstr.2025.100732 · Cited by 5
“Other studies have use fixed dose approaches rather than weight-adjusted doses (Garcia-Romeu et al., 2021; Grob et al., 2011; Johnson et al., 2014).”
Blanton, A. M., Parikh, P., Zhou, S., Mohamed, M., Ufret-Vincenty, R. L., & Mancini, R. (2025) · American Journal of Ophthalmology Case Reports · doi:10.1016/j.ajoc.2025.102359 · Cited by 5
Garel, N., Plourde, L., Greenway, K. T., & Dorval, M. (2025) · Nature Mental Health · doi:10.1038/s44220-025-00446-y · Cited by 5
Bukovsky, D., Amaev, A., Song, J., Kyte, S., Carmona-Torres, E., Ueno, F., Luca, V. D., Strafella, A. P., Husain, M. I., Graff‐Guerrero, A., et al. (2025) · Progress in Neuro-Psychopharmacology and Biological Psychiatry · doi:10.1016/j.pnpbp.2025.111541 · Cited by 9
Vollebregt, R., Storm, A. E. M., Lucassen, P. J., & Somers, M. (2025) · Neuroscience & Biobehavioral Reviews · doi:10.1016/j.neubiorev.2025.106529 · Cited by 8
Single-dose psilocybin promotes cell-type-specific changes of neurons in the orbitofrontal cortex
Huang, Z., Wei, X., Wang, Y., Tian, J., Dong, J., Liang, B., Lu, L., & Zhang, W. (2026) · Neurotherapeutics · doi:10.1016/j.neurot.2026.e00841 · Cited by 8
Impact of psychedelics on craving in addiction: A systematic review
Chapron, S., Bonazzi, G., Lodovico, L. D., de Ternay, J., Landmann, C., Nourredine, M., Salvo, F., Sessa, B., Das, R., Rolland, B., et al. (2025) · Journal of Psychopharmacology · doi:10.1177/02698811241308613 · Cited by 6
“…level after psychedelic administration, 6 studies reported a statistically significant sustained decrease in craving score at 1 (Dakwar et al., 2019; Mash et al., 2018), 6 (Johnson et al., 2014), 9 months (Bogenschutz et al., 2015; Das et al., 2019), and 2 years (Krupitsky et al., 2002) follow-up.”
InfluentialSelf-citationGinati, Y. D., Madjar, N., Ben-Sheetrit, J., Lev‐Ran, S., Weizman, A., & Shoval, G. (2021) · Journal of Psychoactive Drugs · doi:10.1080/02791072.2021.1941444 · Cited by 5
“…for depression (Mahapatra and Gupta 2017), anxiety (Thomas, Malcolm, and Lastra 2017), addiction to substances and specifically addiction to tobacco (Johnson et al. 2014), as well as depression and anxiety in particular cases of life-threatening disease (Griffiths et al. 2016; Ross et al. 2016).”
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Bormann, N. L., Weber, A. N., Miskle, B., Woodson-DeFauw, N., Arndt, S. V., & Lynch, A. C. (2023) · Social Psychiatry and Psychiatric Epidemiology · doi:10.1007/s00127-023-02448-6 · Cited by 5
“Clinical investigations are underway for use of psychedelics in multiple areas, including depression [5–7], post-traumatic stress disorder (PTSD) [8, 9] and substance use disorders [10, 11].”
BackgroundDavis, A. K., Timmermann, C., Bernal, A. M. O., Lancelotta, R., Nayak, S. M., Sepeda, N. D., Nikolaidis, A., & Griffiths, R. R. (2023) · Journal of Psychoactive Drugs · doi:10.1080/02791072.2023.2232379 · Cited by 5
“…such indications as Major Depressive Disorder (Carhart-Harris et al. 2021; Davis et al. 2021; Palhano-Fontes et al. 2019), nicotine use disorder (Johnson et al. 2014), and alcohol use disorder (Bogenschutz et al. 2015), as well as a variety of indications for psychological distress in the…”
Self-citationMarie, S. (2024) · Anthropology of Consciousness · doi:10.1111/anoc.12226 · Cited by 5
Therapeutic Potential of Psychedelic Compounds for Substance Use Disorders
Valdez, T., Patel, V., Senesombath, N., Hatahet-Donovan, Z., & Hornick, M. G. (2024) · Pharmaceuticals · doi:10.3390/ph17111484 · Cited by 5
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Evaluating the value and risks of psychedelics for psychiatric medicine: a clinical perspective
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History of psychedelic drug science and molecular pharmacology
Nichols, D. E., & Nichols, C. D. (2025) · International review of neurobiology · doi:10.1016/bs.irn.2025.02.001 · Cited by 5
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Einstellungen von Expertinnen und Experten für psychische Gesundheit gegenüber Psilocybin
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Venugopal, K., & Bedri, N. (2023) · Undergraduate Research in Natural and Clinical Science and Technology (URNCST) Journal · doi:10.26685/urncst.420 · Cited by 5
Use of Selective Alternative Therapies for Treatment of OCD
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Vitkauskas, M., & Mathuru, A. S. (2020) · International Journal of Molecular Sciences · doi:10.3390/ijms21186525 · Cited by 5
“It is interesting to note that psilocybin has also shown promise in the treatment of addiction [43,44].”
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Bright, S. J., Williams, M. L., & Caldicott, D. G. E. (2017) · Drug and Alcohol Review · doi:10.1111/dar.12544 · Cited by 5
“5 year follow up, with only 10% of participants relapsing [16].”
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Kraiem, E., Diener, M., Guss, J., Mavrides, L., & Saban, S. (2025) · Drugs Education Prevention and Policy · doi:10.1080/09687637.2024.2359444 · Cited by 4
“…including depression (Griffiths et al., 2016; Carhart-Harris et al., 2018), end-of-life distress (Gasser et al., 2014; Gasser et al., 2015; Grob et al., 2011; Ross et al., 2016), substance use (Johnson et al., 2014; Thomas et al., 2013), and post-traumatic stress disorder (Mithoefer et al., 2011).”
Richard, J., Scott, J., Nayak, S. M., Sepeda, N. D., Lowe, M. X., Jackson, H., & Garcia‐Romeu, A. (2025) · International Journal of Mental Health and Addiction · doi:10.1007/s11469-025-01489-z · Cited by 4
“Moreover, self-report questionnaires have been associated with an underestimation of substance use (Johnson, 2014; Steinhoff et al., 2023) limiting our ability reliably measure alcohol and drug consumption patterns over the study period.”
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Development of the Japanese version of the Challenging Experience Questionnaire
Tani, H., Yonezawa, K., Kusudo, K., Barrett, F. S., Nakajima, S., & Uchida, H. (2024) · Neuropsychopharmacology Reports · doi:10.1002/npr2.12456 · Cited by 3
The immunomodulatory effects of psychedelics in Alzheimer’s disease-related dementia
Hosseini, A. M., Khaleghzadeh‐Ahangar, H., & Rahimi, A. (2024) · Neuroscience · doi:10.1016/j.neuroscience.2024.11.062 · Cited by 4
Exploring Gender-Themed Lysergic Acid Diethylamide Experiences: A Subreddit Analysis
Katkar, R., Perez, A. M., Altinay, M. I., & Barnett, B. S. (2025) · Psychedelic Medicine · doi:10.1089/psymed.2024.0025 · Cited by 4
“23 While the legacy of the aforementioned abuse, as well as the abuse of other vulnerable populations including prisoners and African Americans, 24 continues to loom over contemporary psychedelic research and is to be condemned, there have been calls in recent years for increasing the…”
Feasibility of a Hypnosis Intervention for a Mystical Experience
Corlett, C. E., Alldredge, C. T., & Elkins, G. R. (2025) · International Journal of Clinical and Experimental Hypnosis · doi:10.1080/00207144.2025.2491352 · Cited by 5
“shown to help people struggling with alcohol and tobacco addiction (Bogenschutz et al., 2015; Johnson et al., 2014).”
Christen, S. E., Bekka, E., Schmid, Y., Benowitz, N. L., & Liakoni, E. (2025) · Swiss Medical Weekly · doi:10.57187/s.4346 · Cited by 4
LSD: Mechanisms and relevance to the treatment of depression
Bouloufa, A., Delcourte, S., Delannay, T., Rovera, R., Lau, T., Moulédous, L., Dkhissi‐Benyahya, O., Guiard, B. P., & Haddjeri, N. (2025) · Neuroscience & Biobehavioral Reviews · doi:10.1016/j.neubiorev.2025.106407 · Cited by 4
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Mamat, R., Rashid, R. A., Sim, M. S., Ibrahim, B., Wahab, S. B., & Ahmad, A. (2023) · Journal of Addictive Diseases · doi:10.1080/10550887.2023.2240932 · Cited by 4
“57 The use of psi-locybin as a treatment for tobacco use disorder has been documented in a study by, 58 highlighting a high tobacco abstinence rate among respondents in the trial.”
Griffin, C., & Knight, A. (2024) · Journal of Psychedelic Studies · doi:10.1556/2054.2024.00333 · Cited by 4
Pharmacological Properties of Psychedelics with a Special Focus on Potential Harms
Holze, F., Liechti, M. E., & Müller, F. (2024) · Current topics in behavioral neurosciences · doi:10.1007/7854_2024_510 · Cited by 5
Psilocybin-Assisted Therapy May Enhance Conservation Values in Patients with Alcohol Use Disorder
Gold, N. D., Pagni, B. A., Petridis, P. D., & Bogenschutz, M. P. (2024) · Psychedelic Medicine · doi:10.1089/psymed.2024.0030 · Cited by 4
Pharmacies as potential providers of harm reduction services: A preliminary online survey
James, E., Robertshaw, T. L., Westwell, A. D., & Smith, A. P. (2018) · Drug Science Policy and Law · doi:10.1177/2050324518767441 · Cited by 4
“…applications such as tetrahydrocannabinol and other cannabinoids (Grotenhermen and Muller-Vahl, 2012), 3,4-methylenedioxymethamphetamine (MDMA) (Sessa and Nutt, 2015) and psilocybin (Johnson et al., 2014) are not legally available at any form of retailer or dispensary in the UK (Nutt, 2014).”
BackgroundSerotonin and serotonin receptors in hallucinogen action
Halberstadt, A. L., & Nichols, D. E. (2020) · Handbook of behavioral neuroscience · doi:10.1016/b978-0-444-64125-0.00043-8 · Cited by 4
Could psychedelics treat personality disorders
(2022) · Journal of Addiction Science · doi:10.17756/jas.2022-057 · Cited by 3
Baker, K. M., Ulrich, C. M., & Meghani, S. H. (2023) · American Journal of Hospice and Palliative Medicine® · doi:10.1177/10499091221147700 · Cited by 4
“Refinement of the PEQ also demonstrates the concern of participant burden because the total questionnaire ranges from 63-145 items.(6,10,36) McCulloch et al, for example, assessed the measures positive effects, noting limited endorsement of persisting negative effects.”
BackgroundSubregion specific monoaminergic signaling in the female rat striatum during nicotine abstinence
Lucente, E., Cadeddu, D., Edvardsson, C. E., Ericson, M., Jerlhag, E., & Adermark, L. (2024) · Addiction Neuroscience · doi:10.1016/j.addicn.2024.100184 · Cited by 3
Louie, E., Towers, E., Morse, A. R., Watt, J., Bryant, Z., Haber, P., & Morley, K. C. (2025) · International Journal of Mental Health Nursing · doi:10.1111/inm.70010 · Cited by 4
Cioe, P. A., Stang, G. S., Azam, D., & Dugal, S. (2025) · Addiction Science & Clinical Practice · doi:10.1186/s13722-025-00563-0 · Cited by 4
“While 21 articles (both qualitative and quantitative research reports) were selected for review, articles examining the effects of psilocybin in treating nicotine dependence and other substance use disorders were most relevant for the purposes of our study [18, 19, 22, 25–41].”
Psychedelics for substance use disorders: are women being addressed? A scoping review
Nigri, A. W., de Arruda, I. F., Maia, C. G. F., Tófoli, L. F., & Carezzato, F. (2025) · International Journal of Drug Policy · doi:10.1016/j.drugpo.2025.104960 · Cited by 3
Koning, E., McMillan, R. M., Keshen, A. R., Hay, P., Fernandez, A. V., Reynolds, J., & Touyz, S. W. (2025) · Journal of Eating Disorders · doi:10.1186/s40337-025-01394-9 · Cited by 4
“Commonly used instruments often fail to address domains of experience that are relevant to EDs, such as the impact of PAT on self-identity which has been associated with enduring behavioural changes in substance use disorders [43, 44].”
Marinis, J., Clarke, S. T., Guerin, A. A., Guastella, A. J., & Bedi, G. (2025) · BJPsych Open · doi:10.1192/bjo.2025.10847 · Cited by 5
“7,10 While several reviews have focused primarily on efficacy, 13 – 15 a clear understanding of the potential side-effects of PAP is needed to inform implementation in different populations and contexts, as well as individual treatment decisions.”
The utility of 2,5-dimethoxy-4-iodoamphetamine for the study of serotonin 2A and 2C receptors
Cameron, L. P., Jaster, A. M., Ramos, R., & Ullman, E. Z. (2025) · Molecular Pharmacology · doi:10.1016/j.molpha.2025.100093 · Cited by 4
Goldy, S. P., Sepeda, N. D., Hilbert, S. N., Bari, B. A., Garcia‐Romeu, A., Gukasyan, N., Barrett, F. S., Yaden, D. B., & Nayak, S. M. (2026) · Psychiatry Research · doi:10.1016/j.psychres.2026.117010 · Cited by 4
Self-citationHow to set up a psychedelic study: Unique considerations for research involving human participants
Glennon, M. J., Bird, C., Yadav, P., Kleine, P., Suseelan, S., Boman-Markaki, C., Kotoula, V., Butler, M., Leech, R., Roseman, L., et al. (2026) · Neuroscience & Biobehavioral Reviews · doi:10.1016/j.neubiorev.2026.106657 · Cited by 5
Gold, N. D., Podrebarac, S. K., White, L. A., Marini, C., Simon, N. M., Mittelman, M. S., Ross, S., Bogenschutz, M. P., & Petridis, P. D. (2023) · Psychedelic Medicine · doi:10.1089/psymed.2022.0011 · Cited by 3
“71 Additionally, PAP has been or is currently being investigated for its potential to treat eating disorders (NCT04505189, NCT05481736), 72 obsessive-compulsive disorder (NCT03356483), 73 psychiatric distress in Alzheimer’s disease (NCT04123314) 74 and Parkinson’s disease (NCT04932434), as well as…”
Biba, B.-J., & O’Shea, B. A. (2025) · Journal of Psychoactive Drugs · doi:10.1080/02791072.2025.2511750 · Cited by 3
Clinical Utility of Mystical Experiences: An Overview and Conceptual Framework
Alldredge, C. T., Vagner, M., Corlett, C. E., & Elkins, G. R. (2025) · International Journal of Clinical and Experimental Hypnosis · doi:10.1080/00207144.2025.2526351 · Cited by 4
“…psychedelic research describe their experience as “life changing” and often rate it as one of the most meaningful experiences of their lives, at the level of the importance of the birth of a first-born child or the death of a parent (Griffiths et al., 2016; Johnson et al., 2014; Ross et al., 2016).”
Higgins, G. A., MacMillan, C., de Lannoy, I., Tyler, C., & Slassi, M. (2025) · Journal of Psychopharmacology · doi:10.1177/02698811251361453 · Cited by 3
“…disorders and post-traumatic stress disorder has generated significant interest (Andersen et al., 2021; Carhart-Harris et al., 2016; Davis et al., 2021; Goodwin et al., 2022; Griffiths et al., 2016; Higgins and Sellers, 2021; Johnson et al., 2014, 2017; Ross et al., 2016; Rucker et al., 2018).”
Dueck, B. (2020) · Journal of Posthuman Studies · doi:10.5325/jpoststud.4.2.0166 · Cited by 3
Educational Materials and Image Induction Increase Treatment Credibility
Low, F., & Earleywine, M. (2023) · Journal of Psychoactive Drugs · doi:10.1080/02791072.2022.2154722 · Cited by 3
“The PAT description also drew on published data (Davis et al. 2021; Johnson et al. 2014; Reiff et al. 2020; Schenberg 2018), and emphasized the neurological action of psilocybin on the serotonergic system as well as the effects of mystical experiences, the rapid onset of symptom relief, and the…”
MethodDie Rolle der Psychotherapie in klinischen Studien mit Psychedelika
Evens, R., & Wolff, M. (2024) · Die Psychotherapie · doi:10.1007/s00278-024-00715-8 · Cited by 3
“…sehr breit und beinhaltet depressive Störungen, Substanzkonsum-störungen, Angst und Depression im Zusammenhang mit lebensbedrohlichen Krebserkrankungen, Zwangsstörungen und Anorexie nervosa (Moreno et al. 2006; Johnson et al. 2014; Griffiths et al. 2016; Spriggs et al. 2021; Bogenschutz et al. 2022).”
Licit use of illicit drugs for treating depression: the pill and the process
Pacheco, A. T., & Moghaddam, B. (2024) · Journal of Clinical Investigation · doi:10.1172/jci180217 · Cited by 3
“With the caveat that this was a pilot study with a small number of participants and an open-label design, abstinence at 6 months and 12 months was maintained in 60% of participants, a percentage that is much higher than that achieved with current treatments (44, 45).”
BackgroundResultEngel, L. B., Thal, S. B., Bright, S. J., & Low, M. (2024) · Journal of Psychedelic Studies · doi:10.1556/2054.2024.00377 · Cited by 3
Cuttler, C., Stueber, A., Simone, J. J., & Mayo, L. M. (2025) · Journal of Psychoactive Drugs · doi:10.1080/02791072.2025.2452226 · Cited by 3
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Tripping into Treatment: Comparing Initial and Current Motivations for Psychedelic Use
Kruger, D. J., Albrecht, J., Aday, J. S., Barron, J., Herberholz, M., & Boehnke, K. F. (2025) · Journal of Psychoactive Drugs · doi:10.1080/02791072.2025.2461999 · Cited by 3
“In recent years, clinical trials combining psychedelics with therapy have demonstrated promise for a wide variety of psychiatric conditions (Bogenschutz et al. 2022; Carhart-Harris et al. 2021; Johnson et al. 2014; Mitchell et al. 2021).”
A Profile of Those Who Use Hallucinogenic Mushrooms
Spring, M. G., Ostrow, R. D., & Hallock, R. M. (2016) · Elsevier eBooks · doi:10.1016/b978-0-12-800212-4.00074-1 · Cited by 4
Conformational Landscape and Hydrogen Bonding Pattern of Psilocin: Computational Insights
Bhadoria, P., & Ramanathan, V. (2023) · ChemistrySelect · doi:10.1002/slct.202203994 · Cited by 3
Hendricks, P. S., & Grob, C. S. (2016) · Springer eBooks · doi:10.1007/978-3-319-32672-6_14 · Cited by 3
Baseline power of theta oscillations predicts mystical-type experiences induced by DMTPreprint
Tagliazucchi, E., Zamberlán, F., Cavanna, F., de la Fuente, L., Romero, C., Perl, Y. S., & Pallavicini, C. (2021) · bioRxiv (Cold Spring Harbor Laboratory) · doi:10.1101/2021.03.11.434994 · Cited by 3
Classic psychedelics: past uses, present trends, future possibilitiesPreprint
Safron, A., & Johnson, M. W. (2022) · PsyArXiv (OSF Preprints) · doi:10.31234/osf.io/eys2j · Cited by 3
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Haden, M., Woods, B., & Paschall, S. A. (2023) · Journal of Psychedelic Studies · doi:10.1556/2054.2023.00277 · Cited by 6
Psychedelics and cognitive function: A systematic review
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The Therapeutic Potential of Psychedelics on Reducing Rumination: A Mini-Review
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Bezo, A., Roméo, B., Strat, Y. L., Strika-Bruneau, L., Benyamina, A., & Hermand, M. (2024) · Journal of Psychoactive Drugs · doi:10.1080/02791072.2024.2424263 · Cited by 2
“…effects in resistant depression (Carhart-Harris et al. 2016, 2021; Palhano-Fontes et al. 2019; Romeo et al. 2020), anxiety disorders in patients with life-threatening cancer (Griffiths et al. 2016; Ross et al. 2016), and substance use disorders (SUD) (Bogenschutz et al. 2022; Johnson et al. 2014).”
The Medial Prefrontal Cortex Modulates Psychedelic-like Effects of Psilocin
Zhang, M., Zhai, H., Yang, L., Li, H., & Wang, X. (2025) · ACS Pharmacology & Translational Science · doi:10.1021/acsptsci.5c00324 · Cited by 4
Becoming a Psychedelic User: Reflections on Howard Becker and the (Future) Sociology of Psychedelics
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Fearful symmetry in altered states: a bi-logic account of psychedelic action
Goldreich, M. (2025) · Frontiers in Psychology · doi:10.3389/fpsyg.2025.1632923 · Cited by 2
Psychedelic therapy: bridging neuroplasticity, phenomenology, and clinical outcomes
Kishon, R., & Cycowicz, Y. M. (2025) · Frontiers in Psychiatry · doi:10.3389/fpsyt.2025.1637162 · Cited by 3
“Improving mental health and addressing the challenges of inadequate treatment for severe mood disorders have prompted clinicians and researchers to re-examine the potential of psychedelic drugs for treating various disorders including depression, anxiety, PTSD, and substance use (1 – 3).”
Intersections of Psychedelics, Mystical Experiences, and Hypnosis
Elkins, G. R. (2025) · International Journal of Clinical and Experimental Hypnosis · doi:10.1080/00207144.2025.2554387 · Cited by 2
“Psychedelic-assisted therapy has shown promise in treatment of a range of problems such as symptoms of depression (R. L. Carhart-Harris & Goodwin, 2017; Polito & Stevenson, 2019), PTSD (Hood, et al., 2024), smoking cessation (Johnson et al., 2014), and pain (Hutten et al., 2019).”
Bernal, A. M. O., Raison, C. L., Lancelotta, R., Timmermann, C., Sepeda, N. D., & Davis, A. K. (2025) · Journal of Psychoactive Drugs · doi:10.1080/02791072.2025.2577305 · Cited by 1
Qeadan, F., McCunn, A., Tingey, B., & Thielking, P. D. (2025) · Frontiers in Psychiatry · doi:10.3389/fpsyt.2025.1648104 · Cited by 2
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Baumberger, B., Batey, L., & Hashemi, P. (2025) · Discover Mental Health · doi:10.1007/s44192-025-00312-4 · Cited by 2
Moshfeghinia, R., Mostafavi, S., Jazi, K., Ghasemi, A. R., Khosravani-Nezhad, Y., Narayanan, S., Ahmadi, J., & Pasalar, M. (2026) · BMC Psychology · doi:10.1186/s40359-025-03935-y · Cited by 2
“Human clinical studies have demonstrated therapeutic benefits of psilocybin in conditions such as major depressive disorder (MDD) [8], smoking cessation [9, 10], alcohol use disorder [11], as well as anxiety and depression [12, 13].”
Varela, Y. M., Tavares, V. D. D. O., Delgado, L. M., de Faria, H. A. T., Menezes, L. Q., Almeida, R. M., Agrícola, P. M. D., de Carvalho, B. S., Bienemann, B., Falchi-Carvalho, M., et al. (2026) · European Archives of Psychiatry and Clinical Neuroscience · doi:10.1007/s00406-025-02188-5 · Cited by 2
“Other study with ketamine delivered psychotherapy one day before each substance administration followed by 10 exposure sessions delivered over two weeks [47], another of doses taken by each volunteer [38].”
InfluentialEkins, T. G., Deng, T., & Ahmed, O. J. (2026) · Brain and Behavior · doi:10.1002/brb3.71406 · Cited by 2
“Psychedelic medicine has shown great promise for treating neuropsychiatric disorders (Johnson et al. 2014 , 2017 ; Bogenschutz et al. 2015 ; R. L. Carhart-Harris et al. 2016 , 2017 , 2018 ; R. Carhart-Harris et al. 2021 ; Sanches et al. 2016 ; Daws et al. 2022 ; Goodwin et al. 2022 ; Zaretsky et…”
Rowe, T., Hurzeler, T. P., Towers, E., Louie, E., & Morley, K. C. (2026) · Brain and Behavior · doi:10.1002/brb3.71533 · Cited by 3
“…efficacy data exist for a range of psychiatric disorders including depression (Carhart-Harris et al. 2021 ), end of life anxiety (Griffiths et al. 2016 ), post-traumatic stress disorder (Mitchell et al. 2023 ), and substance use disorders (Bogenschutz et al. 2022 ; M. W. Johnson et al. 2014 ).”
Suicide among South Asian Americans: A Systematic Review of Causal and Risk Factors
Srinivasa, S. R., Pasupuleti, S., & Dornamraju, R. (2022) · Journal of Mental Health and Social Behaviour · doi:10.33790/jmhsb1100158 · Cited by 2
The History, Legalization and Potentials of Psilocybin-Assisted Psychotherapy
Heilman, J. (2023) · Journal of Scientific Exploration · doi:10.31275/20222633 · Cited by 7
Metadata
- Authors
- Johnson, M. W., Garcia-Romeu, A., Cosimano, M. P., & Griffiths, R. R.
- Affiliations
- Johns Hopkins University (US)
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA
- Venue
- Journal of Psychopharmacology
- Publisher
- SAGE Publications
- Published
- 2014-09-11
- Volume
- 28
- Issue
- 11
- Pages
- 983-992
- ISSN
- 0269-8811 (ISSN-L)
- 1461-7285
- PMC
- PMC4286320
- OpenAlex
- W2122459973
- Cited by
- 914
- References
- 63
- Citations by year
- 2026: 71 · 2025: 130 · 2024: 126 · 2023: 112 · 2022: 121 · 2021: 94 · 2020: 70 · 2019: 33 · 2018: 48 · 2017: 45 · 2016: 46 · 2015: 13 · 2014: 3
- FWCI
- 41.88
- Type
- journal article
- Language
- en
- Open access
- green
- www.ncbi.nlm.nih.gov
- Locations
- Journal of Psychopharmacology (publishedVersion)
- PubMed (publishedVersion)
- Europe PMC (PubMed Central) (acceptedVersion)
- PubMed Central (acceptedVersion)
- Funders
- World Health Organization
- National Institute on Drug Abuse (R01DA003889, T32DA007209)
- Topics
- Social Sciences › Psychology › Clinical Psychology › Psychedelics and Drug Studies
- Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Smoking Behavior and Cessation
- Health Sciences › Medicine › Epidemiology › Substance Abuse Treatment and Outcomes
- Keywords
- psilocybin, tobacco dependence, smoking cessation, nicotine dependence, hallucinogens, 5-HT2A receptor agonists, adjunctive therapy, abstinence, treatment safety and feasibility
- MeSH terms
- Attitude, Carbon Monoxide, Combined Modality Therapy, Cotinine, Dose-Response Relationship, Drug, Female, Humans, Male, Middle Aged, Pilot Projects, Psilocybin, Tobacco Use Disorder, Biomarkers, Cognitive Behavioral Therapy, Smoking Cessation, Behavior, Addictive, Treatment Outcome, Serotonin Receptor Agonists, Nicotinic Agonists
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