Magic mushrooms are the reason most people find their way to this shop, but psilocybin is only one branch of a much older family. There are several types of psychedelics, and the classic ones have been braided through human ritual, medicine, and culture for thousands of years. This guide surveys the major players beyond the mushroom — what they are, how they differ, and why psilocybin remains the gentlest doorway into the wider world of these compounds.
We keep magic mushrooms at the centre here for a reason: they are the substance we know best, the one with the most forgiving profile, and the one you can actually buy from our dried mushroom range. Everything else in this piece is context that helps you understand where psilocybin sits on the map.
A psychedelic is a substance that alters perception, mood, and thought by acting on the brain’s serotonin system. The word covers a specific group within the broader category of hallucinogens — drugs that change how you sense reality. Not every hallucinogen is a psychedelic; dissociatives like ketamine and deliriants like certain plants work through entirely different pathways. What unites the classic psychedelics is a shared mechanism: they bind to the brain’s serotonin 5-HT2A receptors and reshape ordinary awareness.
The classic serotonergic psychedelics split into two chemical families. Most are tryptamines — psilocybin, LSD, and DMT all share the indole ring at the heart of the serotonin molecule. Mescaline is the outlier, a phenethylamine related to dopamine and adrenaline, yet it produces a comparable experience by acting on the same receptors. This is why a single psychedelic drug can feel so different from the next while still belonging to the same class: the scaffolding differs, but the target does not.
When people ask what the four classic psychedelics are, this is the answer: psilocybin, LSD, DMT, and mescaline. Each has a distinct duration, intensity, and character, even though all four alter perception through the same serotonin pathway.
These four are the backbone of psychedelic history and research, but they are not the whole list. Related hallucinogens include synthetic tryptamines and various phenethylamines, and the broader hallucinogen category also holds substances like ketamine and salvia that sit outside the classic psychedelic family entirely.
The most common comparison people reach for is LSD versus magic mushrooms, and the core difference comes down to source and duration. LSD (lysergic acid diethylamide) is a semi-synthetic compound whose effects last roughly eight to twelve hours. Magic mushrooms contain naturally occurring psilocybin and run their course in four to six hours. Both are classic psychedelics acting on the same 5-HT2A receptors, so the underlying mechanism is shared even though the felt experience is not.
LSD was first synthesised in 1938 by Swiss chemist Albert Hofmann and became the emblem of 1960s counterculture. It is remarkably potent — a dose measured in micrograms is enough to produce profound effects — and users often describe it as sharp, energetic, and visually crisp, with an extended plateau. Magic mushrooms, by contrast, carry psilocybin and psilocin, compounds that closely resemble serotonin itself. That structural kinship is part of why the mushroom experience tends to feel warmer, more embodied, and more emotionally rounded than the electric edge many report.
Neither is inherently “stronger” in a simple sense. It lasts longer and reads as more stimulating; psilocybin is shorter, softer at the shoulders, and easier to fit into an afternoon. For most newcomers, the shorter and gentler arc of mushrooms is the reason we point them toward psilocybin first, whether in dried form or as measured microdose capsules.
DMT (dimethyltryptamine) is a fast-acting psychedelic found naturally in many plants and animals and produced in trace amounts by the human body itself. Its defining trait is speed. A smoked or vaporised dose produces an overwhelming experience that lasts only five to twenty minutes, often described as being launched somewhere entirely else and returning before the body has time to adjust. The same molecule, when taken in the Amazonian brew ayahuasca, is metabolised slowly and can last several hours instead.
Because DMT occurs so widely in nature and even within our own neurochemistry, it has drawn intense scientific and spiritual curiosity. People who take it frequently report encounters with vivid geometric landscapes and a sense of contact with something beyond ordinary consciousness. Of all the classic psychedelics, DMT is the most abrupt and the least forgiving of a casual approach — the opposite end of the spectrum from a gentle mushroom afternoon.
Mescaline is the marathon of the classic psychedelics. It is a naturally occurring alkaloid found in several cactus species — most famously peyote in the deserts of the southwestern United States and northern Mexico, and San Pedro along the Andes. It was the first psychedelic compound ever isolated, extracted from peyote in 1897, and its ceremonial use in Indigenous cultures predates that by thousands of years.
A mescaline experience is slow to arrive and slow to leave, typically lasting ten to twelve hours, with a smooth, dreamlike quality that distinguishes it from the electric arc of acid and the introspective one of psilocybin. It also tends to cause nausea early on, particularly with peyote. Because a single session can fill an entire day, mescaline journeys are usually planned events with a trusted sitter present. For a full breakdown of the experience, dosing, and safety, see our detailed guide to the effects of mescaline.
No survey of the psychedelic world is complete without a nod to the idea that these substances may have shaped who we are. The Stoned Ape Theory is ethnobotanist Terence McKenna’s 1992 hypothesis, laid out in his book Food of the Gods, that the rapid expansion of the human brain was driven in part by early humans eating psilocybin-containing mushrooms as they followed grazing herds across the African savannah.
Mainstream evolutionary biology largely rejects the theory as a primary driver of brain evolution, and McKenna himself called it speculative. But it endures in psychedelic culture as a way of asking a genuinely interesting question: did our relationship with these compounds help make us human? It is a cultural touchstone rather than settled science. If the idea intrigues you, our full write-up on the stoned ape theory walks through both the argument and the criticisms in detail.
Across the classic psychedelics, the core effects rhyme: intensified colour, shifting geometric patterns, an altered sense of time, amplified emotion, and a feeling of connection between self and surroundings. What changes from one substance to the next is the tempo and texture — the compressed lightning of DMT, the long dreamy arc of mescaline, the bright plateau of acid, the warm introspection of psilocybin.
The safety of psychedelics depends far more on preparation than on chemistry. The classic serotonergic psychedelics are not considered addictive and do not produce the compulsive-use pattern of many other drugs, but they are powerful, and a difficult experience is always possible. The old phrase “set and setting” still holds: your mindset and your environment shape the outcome more than almost anything else. Start low, choose a calm and familiar space, keep a sober companion nearby, and never combine these substances with other drugs without understanding the interaction. Research into psilocybin for mood and anxiety is genuinely promising, but nothing here is medical advice, and none of these compounds is a cure. This content is for adults 19 and older.
If mushrooms are where you want to begin — and for most people they are the sensible starting point — you can explore dried options, capsules, and magic mushroom edibles that make dosing simple and predictable.
The most widely known psychedelics are psilocybin (magic mushrooms), LSD, DMT, mescaline, and ayahuasca — the last being a DMT-containing brew rather than a separate molecule. The first four are the classic serotonergic psychedelics that anchor almost every discussion of the subject.
There is no single fixed number, because the category shades into the wider world of hallucinogens. The core group is the four classic psychedelics covered above, joined by related tryptamines and phenethylamines and, more loosely, by non-classic hallucinogens such as ketamine and salvia.
The four classic psychedelics are psilocybin, LSD, DMT, and mescaline. All four act on the brain’s serotonin 5-HT2A receptors, but they differ sharply in duration, intensity, and character — from DMT’s few minutes to mescaline’s ten to twelve hours.
Six commonly cited hallucinogens are psilocybin, LSD, DMT, mescaline, ketamine, and salvia. The first four are classic psychedelics; ketamine is a dissociative and salvia acts on a different receptor system, which shows how broad the hallucinogen category really is.
