The fruit Black Jamun are ovoid shaped edible berries, which start green & turn crimson or purplish black when mature, having 1 seed each. It develops by May to July. It tastes a combination of sweet, sour & astringent flavor. On savoring it tends to color the tongue purple leaving a grainy after effect. It comprises glucose and fructose as principal sugars, which impart the sweet taste on ripening. Jamun Fruit is said to have the best remedy for all chronic ailments including Diabetes. The compounds namely peptidyglycan and an oligosaccharide present in Black Jamun have been found to play a crucial role in lowering sugar levels in a diabetic person.