Morris’ explorations cover a diverse array of psychedelics, each alongside its own unique history, cultural context, and pharmacology. His investigations provide a comprehensive understanding of these substances. Below is a summary of his findings and his personal experiences of several of the substances he has investigated in Hamilton’s Pharmacopeia and in his wider work.
Dimethyltryptamine (DMT)

DMT is a naturally occurring compound found within various plants and even some animals. Morris explored its traditional use within Amazonian shamanic practices, particularly through ayahuasca ceremonies. He travelled to South America to engage with indigenous communities, documenting how DMT serves as a conduit for spiritual and healing experiences.
Scientific Exploration
Morris examined the molecular structure of DMT and its particularly, almost uniquely rapid metabolism inside the human body. He explained its affinity for serotonin receptors, particularly the 5-HT2A receptor, which is believed to be paramount to the psychedelic experience. His work shed light on why smoked, extracted DMT produces such intense yet short-lived effects when compared to Ayahuasca experiences which can last for many hours.
Personal Experience
By partaking in multiple ayahuasca ceremonies, Morris provided a personal account of the profound visions and emotional journeys induced by DMT. His reflections offer valuable insights into the subjective aspects of the experience, bridging the gap between the data and anecdotal reports of others.
Psilocybin
Psilocybin is the active compound in “magic mushrooms”. Due to mushrooms’ astounding ubiquity Psilocybin has a rich history of use within religious and spiritual rituals the world over. Morris traced its journey from ancient Mesoamerican cultures to contemporary clinical trials investigating its potential to treat depression, anxiety, and addiction.
Mechanisms of Action
Morris explained how psilocybin is converted into psilocin inside the body, which then interacts with serotonin receptors. He explored the neurobiological changes that occur during a psilocybin experience, including the alterations in brain connectivity and activity patterns throughout the cortex.
Therapeutic Potential
Highlighting studies from institutions like Johns Hopkins University, Morris discussed how controlled psilocybin sessions can lead to lasting positive changes in mood, behaviour, and to long-held, often negative, attitudes and beliefs. He interviewed both researchers and participants, providing a holistic view of the rapidly evolving therapeutic landscape.
LSD (Lysergic Acid Diethylamide)
LSD has been a pioneering substance in both scientific research and countercultural movements. Morris recounted its accidental discovery by Albert Hofmann on his famous bike ride, and its subsequent influence on psychology, art, and societal norms during the 1960s and beyond.
Effects
Through interviews with experts and more on-camera, personal experimentation, Morris explored how LSD alters sensory perception, thought processes, and emotional states. He investigated phenomena such as synesthesia and ego dissolution, offering explanations grounded within neuroscience.
Contemporary Research
Morris examined modern studies illustrating LSD ‘s potential benefits, including its increasing use in psychotherapy to address conditions like cluster headaches and to end-of-life anxiety. He discussed the challenges and controversies surrounding its legal status and the continuing effects of former demonisation of the substance on current public perception.
MDMA (3,4 – Methylenedioxymethamphetamine)
Commonly known as ecstasy, MDMA gained popularity in recreational settings before researchers recognised its therapeutic potential. Morris traced this evolution, highlighting how MDMA-assisted therapy has shown promise for treating serious ailments such as PTSD.
Effects
Morris investigated how MDMA increases the release of serotonin, dopamine, and norepinephrine, leading to heightened feelings of empathy, trust, and emotional openness. He discussed the implications of these effects for therapeutic settings, where patients can process traumatic memories more effectively.
Ethical and Legal Considerations
By examining the regulatory hurdles and ethical debates surrounding MDMA research, Morris provided insight into the complexities of bringing substances with this much cultural baggage into mainstream medicine.
Ketamine
Initially used as an anaesthetic, ketamine has emerged as a rapid-acting antidepressant. Morris explored this traditionally off-label use for treating severe depression and suicidal ideation, often for patients unresponsive to traditional medications.
Effects
Morris provided insight into ketamine’s interaction with the NMDA receptor and its role within glutamate neurotransmission. He discussed how this leads to synaptic plasticity and to the formation of new neural connections, offering a biological basis for Ketamin’s potential antidepressant effects.
Clinical Observations
Through interviews with psychiatrists and to patients, Morris highlighted the benefits and risks of ketamine therapy. He addressed concerns (largely brought about by media proliferation of the “horse-tranquilliser” label) about dissociative side effects and the importance of controlled clinical environments.
Salvia Divinorum
Salvia divinorum, a plant native to Mexico, has been used for centuries by the Mazatec people for spiritual divination and healing. Morris travelled to Oaxaca to understand its traditional use and significance.
Pharmacology
Morris examined how salvinorin A, the active compound within salvia, is a potent kappa opioid receptor agonist, distinct from classic psychedelics which target serotonin receptors. This accounts for its intense and atypical effects, which can include profound alterations of consciousness and perception of reality which differ greatly from the effects of, for example, psilocybin.
Legal Status and Public Perception
He discussed how salvia’s legal ambiguity and sensationalist media coverage have affected public understanding, and therefore how the substance has been consumed. By providing clear, factual information, Morris aimed to dispel these widespread myths and encourage informed discussions and safer manufacturing and usage practices.
5-MeO-DMT

5-MeO-DMT is known to produce some of the most intense psychedelic experiences in the world, which are often described as mystical or transcendent. Morris investigated both the synthetic form of the substance as well as its natural occurrence inside the venom of the Bufo alvarius toad.
Therapeutic and Spiritual Context
He explored how 5-MeO-DMT is used within ceremonial settings and its potential for facilitating profound personal insights. Interviews with practitioners and users highlighted the substance’s capacity for inducing life-altering perspectives, and altering ingrained patterns of behaviour.
Safety Considerations
Morris emphasised the importance of proper guidance and set-and-setting, noting that the intensity of 5-MeO-DMT can be overwhelming and carries risks if not approached responsibly.
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