This section is from the book "Materia Medica Pharmacy, Pharmacology And Therapeutics", by W. Hale White. Also available from Amazon: Materia Medica Pharmacy, Pharmacology And Therapeutics..
The pharmacopoeial Salts of these metals are powerful astringents. Many of them have some Salts which are emetic, and others which, when applied locally, are Caustic. Aluminum pharmacologically falls into this group.