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.
Ptelea Trifoliata, Wafer-Ash. The bark of this shrub contains considerable berberin. The fluidextract in I5 to 20 I. doses is of value in atonic states of the stomach. It is rather pungent and astringent, and serves admirably in atonic diarrhea.