This section is from the book "Materia Medica And Therapeutics: An Introduction to the National Treatment of Disease", by John Mitchell Bruce. Also available from Amazon: The pharmacology and therapeutics of the materia medica.
Areca - Areca Nut. - The seed of Areca Catechu, the Betel Nut Tree. Imported from the East Indies.
Characters.-The nuts are about the size of a nutmeg, but less wrinkled and more globular, and not aromatic; reddish-brown externally, having a flattened base and somewhat conical apex. The interior is hard, dark brown, finely marbled with white. Inodorous, with astringent taste.
Areca nut is astringent and anthelmintic, and has been used in diarrhoea and helminthiasis. It is rarely given.