A virgin isolate extract derived from Gymnema sylvestre is effective in treating insulin-deficient Type 2 diabetes mellitus, based on a clinical study presented at the American Diabetes Association (ADA). This alternative medicine is extracted from the plant's leaves and was designated as "OSA," or "Om Santal Adivasi."
The modern use of the gymnema plant in treating a wide variety of medical conditions, such as diabetes, evolved from the traditional practice of Ayurvedic medicine, states WebMD. The plant is said to contain chemicals that reduce sugar absorption from the intestines into the blood stream.
Studies conducted in vitro indicated that OSA triggered an increased production of insulin, a hormone that regulates blood sugar. Additionally, OSA supplementation also demonstrated a major decrease in both pre-meal and post-meal blood glucose levels, notes the ADA.