A Comprehensive Review on the Antidiabetic and Pharmacological Activities of Syzygium cumini (Jamun)

Abstract

Jamun (Syzygium cumini), a member of the Myrtaceae family, is an angiospermous plant widely utilized in traditional Indian medicine, particularly since the Vedic period, for the management of diabetes. Although diabetes itself is not immediately fatal, it is associated with multiple systemic complications affecting organs such as the heart and kidneys. The global prevalence of diabetes has been rising, largely due to lifestyle modifications, including changes in dietary patterns. This review aims to systematically compile and analyze available information on the antidiabetic potential of Jamun. Relevant data were collected from scientific databases including Google Scholar, PubMed, SciFinder, and ScienceDirect, along with other online resources. The review highlights the plant’s botanical characteristics, phytochemical composition, and pharmacological properties, with a particular focus on its antidiabetic effects. In the context of Ayurvedic medicine, Jamun is described as having acrid, astringent, carminative, digestive, refrigerant, diuretic, and sweet-sour properties. Ethnomedicinally, it has been employed in the treatment of a wide range of conditions, including fever, piles, leucorrhea, wounds, gastrointestinal disorders, dental issues, and skin diseases. Various parts of the plant are traditionally used to manage ailments such as arthritis, asthma, bowel spasms, dysentery, flatulence, obesity, stomach pain, urinary disorders, and notably, diabetes. Phytochemical investigations have identified numerous bioactive compounds in Jamun, including anthraquinones, alkaloids, cardiac glycosides, catechins, flavonoids, glycosides, steroids, phenolic compounds, saponins, and tannins. Mechanistically, Jamun has been shown to modulate key metabolic pathways by activating signaling molecules such as AKT, PPAR?, and PPAR?, thereby enhancing glucose and lipid metabolism. Additionally, it suppresses the expression of genes and proteins associated with gluconeogenesis and lipid synthesis, including FoxO-1, PGC-1?, ACC1, SREBP-1c, Scd1, KDEL receptor, and GPR98. Overall, contemporary scientific evidence supports the traditional use of Jamun in the management of diabetes and other disorders. Further research may facilitate its integration into modern therapeutic strategies and advance its role in translational medicine.

Introduction

The text discusses Diabetes mellitus, a chronic metabolic disorder caused by impaired insulin function, whose rising prevalence is linked to modern lifestyle changes. It highlights the growing interest in medicinal plants as safer alternative therapies, focusing on Syzygium cumini (Jamun or Indian blackberry), a traditional Ayurvedic remedy for diabetes.

Syzygium cumini is widely distributed in tropical regions and has significant nutritional, medicinal, and economic value. Almost all parts of the plant (seeds, bark, leaves, and fruits) are used in traditional medicine to treat conditions such as diabetes, digestive disorders, inflammation, and infections. The plant contains important phytochemicals like flavonoids, phenolics, alkaloids, glycosides, tannins, and anthocyanins, which contribute to its antioxidant, anti-inflammatory, and antidiabetic effects.

Its antidiabetic activity is explained through multiple mechanisms, including inhibition of carbohydrate-digesting enzymes, reduction of glucose absorption, enhancement of insulin secretion, antioxidant protection, and prevention of diabetic complications through anti-glycation effects. Experimental studies support its ability to lower blood glucose levels and improve insulin function.

The plant also shows other pharmacological properties such as antimicrobial, hepatoprotective, gastroprotective, and anti-inflammatory effects. While generally considered safe, excessive use may cause hypoglycemia, and more clinical studies are needed to confirm optimal dosage and long-term safety.

Conclusion

Syzygium cumini is a valuable medicinal plant with significant antidiabetic potential. Its rich phytochemical composition and multiple mechanisms of action support its traditional use in diabetes management. Continued research may lead to the development of novel plant-based therapeutic agents.

References

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Copyright

Copyright © 2026 Sonam Jadhav, Siddhi Jadhav, Sushant Jagadale, Mrs. Ashwini Dhole, Dr. Rajendra Patil. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.