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Newsgroups: alt.drugs
Subject: Re: T. Peruvians
Date: 7 Jul 1994 06:56:00 GMT
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Regarding the relative concentrations of alkaloids in Trichocereus pachanoi
and Trichocereus peruvianus:

1) Crosby, D.M. & McLaughlin, J.L. (1973). Cactus alkaloids. XIX.
     Crystallization of Mescaline HCL and 3-Methoxytyramine HCL from
     Trichocereus pachanoi. Lloydia, VOl 36, No. 4.

2) Pardanani, J.H., McLaughlin, J.L., Kondrat, R.W., & Cooks, R.G. (1977).
     Cactus Alkaloids. XXXVI. Mescaline and Related Compounds from
     Trichocereus peruvianus. Lloydia, Vol 40., No. 6, pp. 585-590.
 
In the former article, a concentration of 0.331% mescaline base was obtained
from freeze-dried Trichocereus pachanoi.  Note that the sulfate salt has 
a heavier weight and requires 300-500 mg for a full dose; the hydrochloride
salt is less heavy and requires 225-375 mg for a full dose; the free base
requires 205-343 mg for a full dose.  Thus, a full dose of the cactus would
be 57-96 grams, dry weight.
 
In the latter article, a concentration of 0.82% mescaline base was obtained.
Thus, Trichocereus peruvianus analyzed by these authors was somewhat less 
than three times as potent as the T. pachanoi.  The effective dose of
T. peruvianus would thus be 25-42 grams of the dried cactus.
 
Hope that information is helpful.