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Rosana K. A. de Macedo

3 papers in the library · 56 citations · publishing 2024-2025

Papers

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Rapid and sustained antidepressant effects of vaporized N,N-dimethyltryptamine: a phase 2a clinical trial in treatment-resistant depression.

Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology May 1, 2025 Marcelo Falchi-Carvalho, Fernanda Palhano-Fontes, Isabel Wießner et al. 35 citations

Depression affects over 185 million people worldwide, with approximately one-third classified as treatment-resistant depression (TRD). Current treatments, such as oral antidepressants, often take around 3 weeks to become effective, with no immediate anti-suicidal benefits. The field urgently needs innovative therapies that provide rapid relief. Psychedelics like psilocybin and ayahuasca have...

The Antidepressant Effects of Vaporized N,N-Dimethyltryptamine: An Open-Label Pilot Trial in Treatment-Resistant Depression.

Psychedelic medicine (New Rochelle, N.Y.) March 1, 2025 Marcelo Falchi-Carvalho, Handersson Barros, Raynara Bolcont et al. 16 citations

N,N-Dimethyltryptamine (DMT), a naturally occurring psychedelic tryptamine contained in the indigenous ayahuasca brew, has shown antidepressant effects. This open-label clinical trial investigates for the first time the efficacy of vaporized DMT in treatment-resistant depression (TRD). Six TRD patients participated in an open-label, fixed-order, dose-escalation study, receiving a lower (15 mg)...

The antidepressant effects of vaporized N,N-Dimethyltryptamine: a preliminary report in treatment-resistant depression

medRxiv January 4, 2024 Marcelo Falchi-Carvalho, Handersson Barros, Raynara Bolcont et al. 5 citations preprint

Abstract Introduction N,N-Dimethyltryptamine (DMT), a naturally occurring psychedelic tryptamine contained in the indigenous ayahuasca brew has shown antidepressant effects. This Phase 2a clinical trial investigates for the first time the efficacy of isolated DMT in treatment-resistant depression (TRD). Methods Six TRD patients participated in an open-label, fixed-order, dose-escalation study,...