howtosupplement
Hormonal/Weight

Banaba

Leaf extract containing corosolic acid that may help regulate blood glucose and modestly support weight management in adults with insulin resistance.

Banaba

Banaba

45
score
C
evidence
Caution
risk

Proven Benefits

01Lowers fasting glucose
02Lowers postprandial glucose
03May lower HbA1c
04May reduce body weight

Chemical Forms

Recommended
  • Banaba leaf extract standardized to 1-3% corosolic acid
  • Corosolic acid
Avoid
  • Unstandardized leaf powder (unknown active content)
Expert Note

Human trials usually use standardized extracts with defined corosolic acid content. Raw or unstandardized leaf powder can vary widely in active compounds, so dose and effect are less predictable.

Protocol

Amount
150-300 mg
Frequency
Once daily
When
With meals, especially carbohydrate-containing meals, to blunt postprandial glucose spikes.

Condition-Based Dosing

Prediabetes or elevated fasting glucose
300 mg daily of standardized extract for 8-12 weeks
General metabolic support
150 mg daily of standardized extract

Safety & Limits

Upper Safe Limit
No established UL; 300 mg/day of standardized extract is a commonly studied upper dose.
Cycling
Safe for continuous use

Contraindications

Insulin or sulfonylurea medications — increased hypoglycemia risk
Hypoglycemia disorders — may worsen low blood sugar episodes
Pregnancy or breastfeeding — insufficient safety data

Synergies

Chromium

Chromium picolinate may further improve insulin sensitivity and glucose uptake, so the combination can be additive.

Berberine

Berberine activates AMPK and improves insulin sensitivity through complementary pathways.

Cinnamon

Cinnamon may slow carbohydrate digestion and modestly improve post-meal glucose control.

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