howtosupplement
Hormonal/Heart/Weight

Gymnema sylvestre

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

Gymnema sylvestre

Gymnema sylvestre

50
score
C
evidence
Caution
risk

Proven Benefits

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

Chemical Forms

Recommended
  • Leaf extract standardized to 25% gymnemic acids
  • Gymnemic acid extract
Avoid
  • Raw leaf powder (low active content, unstandardized)
  • Proprietary blends with undisclosed gymnemic acid dose
Expert Note

Standardized extracts provide a consistent dose of gymnemic acids, the bioactive compounds linked to glucose and taste effects. Raw leaf powders vary widely in active content and lack the clinical validation of standardized extracts. Products should specify gymnemic acid percentage, typically 25%.

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.

Condition-Based Dosing

Type 2 diabetes with elevated fasting glucose
400-800 mg daily of 25% standardized extract for 8-12 weeks
Prediabetes or sugar craving reduction
400-600 mg daily before meals

Safety & Limits

Upper Safe Limit
No established UL; up to 800 mg/day of standardized extract has been studied without serious adverse effects
Cycling
Safe for continuous use

Contraindications

Insulin or sulfonylurea therapy — high hypoglycemia risk without medical adjustment
Pregnancy or breastfeeding — insufficient safety data
History of severe hypoglycemia — may worsen low glucose episodes
Scheduled surgery — discontinue at least 2 weeks prior due to blood sugar effects

Avoid Combining With

  • ✕Diabetes medications like insulin or sulfonylureas (increases hypoglycemia risk — consult prescriber)
Updated Invalid Date