Jambolan seed, szygium cumini, Eugenia jambolana, jamun seed Syzygium cumini, commonly known as jambolan,Java plum, black plum or jamun, is an evergreen tropical tree. Its give nutritional strength to diabetic patient. The seed of the fruit is used in various alternative healing systems like Ayurveda, Unani and Chinese medicine. Wine and vinegar are also made from the fruit. It has a high source in vitamin A and vitamin C.