Objective: Gymnema sylvestre, a rare herb with significant medicinal values widely used as a naturopathic treatment for diabetes. This study demonstrates the antidiabetic potential and changes in the levels of pancreatic putrescine in G. sylvestre treated experimental rat models.Methods: Phytochemical analysis was carried out for methanolic leaf extract of G. sylvestre (GSME). Further, antidiabetic property and putrescine levels in alloxan-induced diabetic Wister albino rats were analyzed by

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... h-performance liquid chromatography method.Results: The GSME (500 mg/kg b/w) was administered daily up to 15 days in diabetic rats against standard drug metformin (500 mg/kg b/w). At the end of the experiments, the increased body weights were noted in the diabetic control groups, while there was reduction in blood glucose level, total protein, liver glycogen, glutathione, glutathione peroxidase, and blood catalase, respectively.Conclusion: GSME at the dose of (500 mg/kg b/w) brings about significant beneficial effects in various physiological parameters and level of putrescine altered during diabetic manifestations, and these effects are quite comparable with the standard drug, metformin.