Ayahuasca
Ayahuasca (caapi, yage, vegetal) is a plant-based
hallucinogen that users ingest as a
drink containing a combination of plant products. Although formulations vary, the two essential components are
the bark of the vine Banisteriopsis
caapi and the leaves of Psychotria viridis. The active ingredients
provided by this combination are the beta carbolines harmine and harmaline, and DMT (see previous section). This
combination produces a period of
intense nausea and vomiting, a period of anxiety or fear, followed by an intense hallucinatory and dissociative
experience. The hallucinations are
predominantly visual, although users report increased sensitivity to sensory stimuli also. Users
frequently experience the dissociation
common to other hallucinogens and a profound sense of insight. The experience lasts a number of hours.
Ethnobotanists
including Richard Schultes documented use of this drug by indigenous peoples of the Amazon that probably
goes back centuries. The Beat writer
William Burroughs recorded his experiences with this drug in The Yage Letters,
and the sixties generation learned
about it from The Teachings of Don Juan by Carlos Castaneda. Use of aya huasca has migrated to the United States from South American religious
groups like the Uniao do Vegetal
(UDV) and Santo Daime that have revitalized the once common use of this drug by
native shamans for magico-religious purposes, such as healing and divination. Unlike many hallucinogens,
ayahuasca is almost never used
recreationally, but more typically as a pharmacologic aid to personal insight and enlightenment.
SALVIA DIVINORUM
Indians of Mexico use a plant called Salvia divinoruin (a rare member of the mint
family) for religious purposes, and it has generated some curiosity in the
United States mainly because it is not yet illegal. Indians chew the leaves, but in the United States, people more
typically smoke the leaves. Salvia
causes an intense and sometimes unpleasant hallucinatory experience that lasts about an hour. Users report
a unique experience that resembles
neither LSD nor other hallucinogens. This drug is more likely than other hallucinogens to produce an unpleasant
experience due to its novel mechanism of action, and so repeated use is
somewhat unusual. The active agent is
probably a compound called Salvinorin A, the second most potent hallucinogen
known after LSD. A smoked dose of as little as 200 to 500 micrograms produces hallucinations.