The jambul fruit regarded in traditional medicine as a specific against diabetes. because of its effect on the pancreas. The fruit as such, the seeds and fruit juice are all useful in the treatment of this disease. The seeds contain a glucose 'Jamboline' which is believed to have the power to check the pathological conversion of starch into sugar in cases of increased production of glucose.
In Ayurveda, the inner bark of the jambul tree is also used in the treatment of diabetes. The bark is dried and burnt, which produces an ash of white color. This ash should be pest led in the mortar, stramed and bottled. The diabetic patient should be given 65 mg. of this ash an empty stomach with water in the morning and 135 mg. each time in the afternoon and in the evening, an hour after meals, if the specific gravity of the urine is 1.02 to 1.03. If the specific gravity ranges between 1.035 and 1.055, the ash should be given thrice daily in the quantity of about 2 gm. at a time.
Polyuria :- The powder of the seeds is valuable in polyuria or production of excess urine. It should be taken in dose of 1 gm. in the morning and evening.
Diarrhea and Dysentery :- Powder of the seed is an effective remedy for diarrhea and dysentery. About 5 to 10 gm. of this powder should be taken with butter-milk in these conditions. An infusion of the tender leaves, which contain a high concentration of gallic and tannic acid is also given as a medicine in diarrhea and dysentery. This infusion, prepared from 30 or 60 gm. of leaves, should be given twice or thrice daily. A decoction of the bark taken with honey is also an useful medicine for chronic diarrhea and dysentery.