This section is from the book "A Practitioner's Handbook Of Materia Medica And Therapeutics", by Thos. S. Blair. Also available from Amazon: A Practitioner's handbook of Materia Medica and Therapeutics.
Upas Tiente, Upas Tree. This very poisonous plant is used in sectarian practice, but has no advantages to recommend it over other agents. Large doses produce tonic spasms and asphyxia. Small doses are a nerve and sexual tonic (3x).
 
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