This section is from the book "A Treatise On Therapeutics, And Pharmacology Or Materia Medica Vol2", by George B. Wood. Also available from Amazon: Part 1 and Part 2.
Veratria is an organic alkali, found in white hellebore and cevadilla, in which it is said to exist in combination with gallic acid. As already stated, either it, or an alkaloid closely resembling it, has been ascertained to exist also in American hellebore. Before treating of Veratria specially, it will be proper to give a brief notice of the substances of which it constitutes a characteristic ingredient.