The classical psychedelics (+)-lysergic acid diethylamide (LSD), psilocybin, and mescaline exert their psychedelic effects via activation of the 5-HT2A serotonin receptor (5-HT2AR). Recent clinical studies have suggested that classical psychedelics may additionally have therapeutic potential for many neuropsychiatric conditions including depression, anxiety,...
Accumulating evidence suggests that psilocybin can produce rapid and sustained clinical benefits when administered in conjunction with psychological support. Though non-pharmacological procedures are considered integral, the field lacks therapeutic guidelines and little is known about current practices. This systematic review sought to provide a comprehensiv...
Psilocybe species, commonly known as "magic mushrooms", are a group of hallucinogenic fungi known for their psychoactive compounds such as psilocybin, psilocin, baeocystin, and norbaeocystin. These species have been the focus of scientific study due to their potential therapeutic applications, despite their classification as controlled substances in many jur...
Traumatic brain injury (TBI) is a significant global health challenge, with limited effective treatments for its acute and chronic consequences. TBI is characterized by neuroinflammation, oxidative stress, impaired neuroplasticity, imbalances in neurotransmission, and cell death - factors that contribute to the development of neurological and psychiatric dis...
BackgroundClassic serotonergic psychedelics are 5-HT2A partial agonists that induce non-ordinary states of consciousness. Many have demonstrated anti-addictive properties; however, their impact on smoking behaviors remains under-researched. This review provides a synthesis of the therapeutic potential of these compounds in promoting smoking cessation and red...
Psychedelics have been studied since the 1950s as a potential treatment for alcohol use disorder (AUD), with over a dozen clinical trials of lysergic acid diethylamide (LSD), and several contemporary trials of psilocybin and ayahuasca for this indication. Herein, we characterize foundational studies from the 1950s to the present, with emphasis on key design ...
BackgroundResearch into psychedelics has gained renewed interest due to their potential to address psychiatric, neurological, and other peripheral conditions. These substances offer long-term therapeutic benefits, contrasting with the side effects and limitations of current psychiatric medicines.ObjectiveThis study examines the legislations and regulatory fr...
Major depressive disorder is a debilitating condition, with many patients unresponsive to conventional monoaminergic antidepressants. Rapid-acting antidepressants such as ketamine and psilocybin offer promising alternatives, relieving symptoms within hours. Ketamine, an NMDA receptor antagonist, and psilocybin, a serotonergic psychedelic primarily targeting ...
ImportancePsilocybin has demonstrated rapid and sustained antidepressant efficacy, with acute-phase effect sizes often more than double those for conventional antidepressants. However, concerns have been raised that high rates of functional unblinding in combination with trial participants with positive expectations of psychedelic use might bias treatment ou...
IntroductionNatural hallucinogens derived from fungi and animals have been used for centuries in shamanic, ritualistic, and medicinal practices across diverse cultures. These compounds exhibit a widerange of structures and mechanisms of action, affecting various neurotransmitter systems pathways. Fungal hallucinogens, primarily indole alkaloids like psilocyb...
This systematic review and meta-analysis evaluates (1) the effectiveness of psychedelic-assisted therapy (PAT) using psilocybin and ketamine for psychosocial symptoms in adults with cancer, (2) contextualizes findings with non-randomized and exploratory studies of other psychedelics, and (3) examines the role of therapeutic frameworks in shaping outcomes. We...
The use of drugs with psychedelic and dissociative effects for the treatment of psychiatric illnesses has become increasingly popular in recent years. However, few trials have been conducted to determine the efficacy of these agents in the specific setting of treatment-resistant major depressive disorder (MDD) in older adults. In this paper, we review notabl...
Human neuroimaging with functional Magnetic Resonance Imaging has been a key feature of the current wave of psychedelic research, in both healthy and clinical populations. The available data has suggested that classic psychedelics (psilocybin, LSD, DMT) have a characteristic effect of acutely and profoundly disrupting the normal pattern of resting-state conn...
Millions worldwide suffer from chronic pain, a complex condition often accompanied by depression and anxiety, highlighting the urgent need for innovative treatments. Classic psychedelics, including psilocybin, lysergic acid diethylamide (LSD), and N,N-dimethyltryptamine (DMT), primarily act on serotonin 5-HT2A receptors and have emerged as potential modulato...
Neurological and psychiatric disorders are considered one of the major problems of today's societies and cause many individual and social problems. Current treatments are effective, but due to their burdens, there is always an effort to introduce novel treatments. Psychedelics, a diverse group of psychoactive compounds, including LSD, psilocybin, DMT, MDMA, ...
Psilocybin is a psychedelic serotonergic compound that is renowned for its potent psychoactive effects. Over the past 15 years, an increasing number of controlled clinical trials showed that it has a fast-acting and sustainable efficacy in treating various psychiatric disorders. Neuroimaging studies have been conducted with the objective of elucidating the n...
BackgroundRecent evidence suggests that psychedelics can induce rapid and long-lasting antidepressant effects. The generally acknowledged explanation for these traits is the phenomenon of neuroplasticity, although the exact underlying molecular mechanisms remain unclear.AimsThis study investigates the effects of psilocin, lysergic acid diethylamide (LSD) and...
One of the most promising lines of investigation for the therapeutic use of hallucinogens in the 1960s and 1970s was in the treatment of drug dependence. The investigators propose to examine psilocybin administration combined with a structured smoking cessation treatment program in nicotine dependent individuals in order to provide preliminary data on the ef...
To design therapeutic trials and select the most appropriate substance and dose for an indication, a detailed understanding of clinical pharmacology is crucial. In recent years, several studies have explored the human pharmacology of different psychedelics and 3,4-methylendioxymethylamphetamin (MDMA). This chapter summarizes pharmacological characteristics o...
