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Hormonal/Heart/Weight

Gymnema sylvestre

Ayurvedic herb studied for lowering fasting glucose and HbA1c in type 2 diabetes, and reducing sugar cravings.

Gymnema sylvestre
50
score
C
evidence
Caution
risk

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This supplement may interact with medications, medical conditions or sensitive populations. Review safety before use.

Quick Take

Consider only if you have prediabetes or type 2 diabetes — evidence is promising but limited.

Gymnema sylvestre is a woody climbing shrub native to India and Africa whose leaves have been used in Ayurvedic medicine for centuries, usually as tea or extract. Its active compounds, gymnemic acids, appear to reduce intestinal glucose absorption and increase pancreatic insulin secretion. Human trials suggest it can lower fasting blood glucose and HbA1c in type 2 diabetes, may improve cholesterol levels, and might support modest weight loss. It also temporarily blocks sweet taste receptors on the tongue.

Potential benefits

01
Lowers fasting glucose and HbA1c
02
May improve lipid profile
03
May reduce sugar cravings
04
May improve insulin sensitivity
05
May support modest weight loss
06
May lower blood pressure

Protocol

Amount
400-800 mg
Frequency
Twice daily, before meals
When
15-30 minutes before carbohydrate-containing meals to reduce glucose absorption and blunt sweet taste.

Onset Time

2-4 weeks for glucose effects; acute sweet taste suppression within minutes.

Who Should Consider

Adults with type 2 diabetes or prediabetes
People with elevated fasting glucose
Those trying to reduce sugar cravings
Overweight adults with insulin resistance

How It Works

Gymnemic acids in the leaves suppress glucose absorption in the gut and may stimulate insulin secretion from pancreatic beta-cells. They also bind to sweet taste receptors on the tongue, temporarily blocking the sensation of sweetness and potentially reducing sugar intake.

Updated 5/19/2026

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