This section is from the book "Botanic Drugs Their Materia Medica, Pharmacology and Therapeutics", by Thomas S. Blair. Also available from Amazon: Botanic Drugs, Their Materia Medica, Pharmacology and Therapeutics.
Nutgall, Quercus infectoria. Average dose, 7 1/2 grains; but gallic and tannic acids have supplanted it. The drug is mentioned here simply to call attention to the Unguentum Gallae, U. S. P., an admirable astringent ointment of value in the treatment of external hemorrhoids. If the hemorrhoids are irritable, the addition of belladonna extract is an advantage.