Syzygium cumini, also called Jamun, is a member of the Myrtaceae family. Syzygium cumini seeds, a type of traditional remedy, were available on the market and were extensively used to control disease. The purpose of the present study is to investigate the immense effect that Syzygium cumini bark has upon diabetes. This study's objective is to confirm the antidiabetic activity. Using DPPH, Abts, Phosphomolybdenum, and Ferrous Reducing Power, the scavenging capability of methanolic extract and the standard (Ascorbic acid) was evaluated. The IC50 was identified as 45.67% and 45.06%, whereas the RC50 was identified as 46.18% and 56.45%. With an IC50 value of 18.62%, the 3T3 L1 Adipocytes diabetic cell line revealed anti-diabetic action