Determining the strength of San Pedro or Peruvian Torch Cactus

Mescaline dosing for beginners

Psychedelics are Medicine
The Psychedelic Collective
4 min readMar 18, 2022

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A large San Pedro cactus shares an orange potted container with an aloe vera, against a white wall. There are four smaller San Pedro cacti in their own pots in the foreground.
Image: Property of author

An unfortunate reality of taking natural psychedelics is that they can vary widely in potency and result in either unexpectedly heavy or disappointingly light trips. San Pedro and Peruvian Torch in particular can contain anywhere from 0–3% mescaline by weight, making them particularly hard to dose properly…

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Psychedelics are Medicine
The Psychedelic Collective

Fighting for drug policy reform, psychedelic research, religious freedom, and an end to the misconceptions about psychedelic users.