Materia Medica

Cleavers (Galium aparine)
Cleavers (Galium aparine) — Goosegrass, Stickywilly, Catchweed
A whole-plant guide to cleavers (Galium aparine), including wild identification, leaves, stems, flowers and fruits, cut-and-sifted and powdered forms, traditional use, preparation, safety and folklore. Read more...
Yohimbe (Corynanthe johimbe) — Yohimbine, Johimbe
Yohimbe is a West and Central African tree whose bark contains yohimbine, a pharmacologically potent alpha-2 adrenergic antagonist. This guide distinguishes traditional bark from purified yohimbine, reviews sexual-health research, documents major supplement-label variability, and explains cardiovascular, neurologic and medication-interaction risks. Read more...