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Dosages refer to mescaline hydrochloride salt. Botanical preparations contain variable concentrations and are not interchangeable with pure mescaline.
Effects vary widely by individual, dose, and context.
The physical effects of mescaline can be broken down into several components which progressively intensify proportional to dosage.
The cognitive effects of mescaline can be broken down into several components which progressively intensify proportional to dosage. In comparison to other psychedelics such as Psilocin, LSA and ayahuasca, mescaline is significantly more stimulating and fast-paced in terms of the specific style of thought stream produced and contains a large number of potential effects.
Mescaline presents a full and complete array of possible visual distortions which generally includes:
Mescaline presents a full and complete array of possible visual enhancements which generally includes:
The visual geometry that is present throughout this trip can be described as more similar in appearance to that of ayahuasca, 2C-P or Psilocin than that of LSD, 2C-B or 2C-I. They can be comprehensively described as structured in their organization, organic in geometric style, intricate in complexity, with a variable size that spontaneously changes between large and small in appearance, fast and smooth in motion, colourful in scheme, glossy in colour, primarily rounded yet somewhat angular in their corners. They give off a natural feel to them that at higher dosages are significantly more likely to result in states of Level 8B visual geometry over Level 8A
Mescaline produces a full range of high level hallucinatory states in a fashion that is more consistent and reproducible than that of many other commonly used psychedelics
The auditory effects of mescaline are common in their occurrence and exhibit a full range of effects which commonly includes:
These combinations are considered extremely harmful and should always be avoided. Reactions to these drugs taken in combination are highly unpredictable and have a potential to cause death.
There is considerable risk of physical harm when taking these combinations, they should be avoided where possible.
These combinations are not usually physically harmful, but may produce undesirable effects, such as physical discomfort or overstimulation. Extreme use may cause physical health issues. Synergistic effects may be unpredictable. Care should be taken when choosing to use this combination.
There is no evidence of mescaline showing addiction or dependence. The substance does not appear to produce reinforcing effects that lead to compulsive use patterns.
No physical dependence has been documented with mescaline use. The substance does not produce withdrawal symptoms upon cessation.
The lethal dose of mescaline relative to a typical recreational dose is estimated to be approximately 24-fold based on animal studies and human case reports. Doses above approximately 2 grams are considered toxic and may cause serious adverse effects. Based on animal data, it would be very difficult to consume enough mescaline to cause death in humans. LD50 values show considerable variation between species; mouse values ranged from 212-315 mg/kg IP, while rat values showed a wider range of 132-410 mg/kg IP.
| Species | Route | Value |
|---|---|---|
| mouse | IP | 212 mg/kg |
| rat | IP | 132 mg/kg |
| guinea pig | IP | 328 mg/kg |
| dog | unspecified | 54 mg/kg |
| rhesus macaque | IV | 130 mg/kg |
Liver damage has been reported at toxic doses of approximately 2 grams or more; occasional use at typical recreational doses is not associated with hepatotoxicity.
Respiratory paralysis may occur at toxic doses of approximately 2 grams or more; this represents an overdose scenario rather than a risk at typical recreational doses.
Acute cardiovascular effects including increased heart rate, elevated blood pressure, and palpitations occur during intoxication as part of sympathetic arousal; serious cardiovascular events are uncommon at typical doses and primarily concern individuals with pre-existing conditions.
Rarely, in susceptible individuals such as those with a family history of schizophrenia, mescaline may cause psychosis. The substance can potentially trigger latent mental disorders even with single use in predisposed individuals.
Mescaline has some potential to cause seizures, particularly when combined with substances that lower seizure threshold. Seizure risk is notably elevated in combination with lithium or tramadol.
Archaeological evidence from sites across the United States, Mexico, and Peru demonstrates that mescaline-containing cacti have been used in ceremonial and spiritual contexts for over 6,000 years. The San Pedro cactus has been in continuous spiritual and medicinal use in Peru for more than 3,000…
UN Convention on Psychotropic Substances 1971
Listed as a Schedule 9 substance under the Poisons Standard, defined as a substance with high potential for causing harm requiring special precautions during handling. Possession, supply, and use are restricted to specialized or authorized users with appropriate skills and permissions.
Mescaline in raw form and dried mescaline-containing cacti are classified as illegal drugs. However, living peyote and Echinopsis cacti may be cultivated without restriction due to specific legislative exemptions.
Mescaline in raw form and dried mescaline-containing cacti are prohibited under drug control legislation. Living specimens of peyote and Echinopsis species are exempt and may be grown without legal restriction.
Purified mescaline powder is controlled as a Class A substance under the Misuse of Drugs Act 1971, carrying the most severe penalties. However, dried mescaline-containing cacti can be legally purchased and sold.
Mescaline is classified under Schedule III of the Controlled Drugs and Substances Act. However, the peyote cactus (Lophophora williamsii) is specifically exempt from scheduling, as are living Echinopsis pachanoi and Echinopsis peruviana specimens. Raw mescaline and dried cactus preparations remain prohibited.
Mescaline in raw form and dried mescaline-containing cacti are controlled under German narcotics law. Living peyote (Lophophora williamsii) and Echinopsis cacti are specifically exempt from legislation and may be cultivated.
Mescaline, its derivatives, and all mescaline-containing plants are banned as narcotic drugs under Schedule I of Russian drug control legislation. Unlike some other jurisdictions, no exemption exists for living cacti.
Classified as a Schedule I hallucinogen under the Comprehensive Drug Abuse Prevention and Control Act of 1970. Religious exemptions exist for groups such as the Native American Church under the American Indian Religious Freedom Act of 1978, and many states permit peyote use with sincere religious intent. Colorado decriminalized synthetic mescaline (but not cactus-derived mescaline) via Proposition 122 in November 2022. Echinopsis cacti remain technically controlled but are commonly sold as ornamental plants.
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