This section is from the book "A Manual of Materia Medica and Pharmacology", by David M. R. Culbreth. Also available from Amazon: Manual of Materia Medica and Pharmacology.
Eugenia Jambola'Na, Jambul, Java Plum. E. Indies. Large tree producing edible fruit; all parts astringent, but seed and bark also arrest formation of sugar in diabetes; seed 1.2 Cm. (1/2') long, a third as thick, oval, one end truncate, blackish-gray, hard, heavy, little odor and taste; capsules, fluidextract. Dose, gr. 5-10 (.3-6 Gm.).
 
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