Gymnema sylvestre is a woody climbing plant native to the tropical forests of India, Africa, and Australia. In Ayurvedic medicine, where it has been used for over 2,000 years, it is known as "gurmar" — a Hindi word meaning "destroyer of sugar." The name refers to one of its most distinctive properties: chewing the leaves of the plant temporarily suppresses the ability to taste sweetness.
What are gymnemic acids?
The primary bioactive compounds in Gymnema sylvestre are a group of triterpenoid saponins called gymnemic acids. When applied to taste receptors on the tongue, gymnemic acids temporarily block the sweet taste receptors, preventing sweet-tasting substances from binding to them. This effect lasts for 15–30 minutes and then reverses completely. In the digestive tract, gymnemic acids appear to bind to glucose receptors in the intestinal wall, potentially reducing glucose absorption.
Traditional and modern use
Gymnema has been a core herb in Ayurvedic practice for managing sweet cravings and supporting normal carbohydrate metabolism. In modern phytotherapy, it is used primarily for its potential to support normal blood glucose regulation and to reduce the appeal of sweet foods. Research published over the past 30 years has investigated gymnema's effect on glucose absorption and insulin secretion.
Standardisation
Quality Gymnema sylvestre supplements are standardised to a specific percentage of gymnemic acids, typically 25% or 75%. A 25% standardised extract providing 400 mg would deliver 100 mg of gymnemic acids per serving. Standardisation ensures consistent potency across batches.
Recent research
- Use of Gymnema sylvestre leaf extract in the control of blood glucose in insulin-dependent diabetes mellitus — Journal of Ethnopharmacology, 1990. Authors: Shanmugasundaram ER et al. GS4 extract reduced fasting and postprandial glucose concentrations and lowered HbA1c compared to baseline values.
- Effects of sweetness perception and caloric value of a preload on short term intake — Physiology & Behavior, 1983. Authors: Brala PM, Hagen RL. Gymnema extract applied to the tongue suppressed perceived sweetness intensity by blocking taste receptor binding.
- Antidiabetic effect of a leaf extract from Gymnema sylvestre in non-insulin-dependent diabetes mellitus patients — Journal of Ethnopharmacology, 1990. Authors: Baskaran K et al. Serum lipids including total cholesterol and triglycerides decreased alongside glycated haemoglobin after 18–20 months of supplementation.
Available product
Supplements & More carries Carlyle Gymnema Sylvestre (standardised extract, capsules). Imported from the United States, delivered across Lebanon with cash on delivery.