This section is from the book "Dental Medicine. A Manual Of Dental Materia Medica And Therapeutics", by Ferdinand J. S. Gorgas. Also available from Amazon: Dental Medicine.
Veratrine is an alkaloid, or a mixture of alkaloids, obtained from the seeds of Asagraea officinalis, of the natural order Melanthaceae. It is in the form of a white, or grayish-white amorphous powder, of an acrid taste, imparting a sensation of tingling and numbness to the tongue, and causing constriction of the fauces and violent sneezing. It is but slightly soluble in cold or hot water, to which it imparts an acrid taste and a somewhat alkaline reaction.
Veratrine Ointment - Unguentutn Veratrines - is composed of veratrine, 4 parts ; alcohol, 6 parts ; benzoinated lard, 96 parts. The veratrine is rubbed with the alcohol in a warm mortar until dissolved, and the benzoinated lard gradually added and thoroughly mixed.
Veratrine is only used externally in neuralgia, myalgia, headache, rheumatism, paralysis, etc., in the form of the ointment, or dissolved in alcohol.
Veratrine, in the form of the ointment, is used for facial and other forms of neuralgia, a small quantity being rubbed over the seat of pain. It is also used as an obtundent of sensitive dentine.
For Sensitive Dentine. Dr. Bogue.
Acidum tannicum . . gr.j
Acidi carbolici .... Signa. - Dry the tooth thoroughly and apply to sensitive surface.
For Facial Neuralgia.
Rub over affected part thrice daily.