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Herbal Extract

Banaba Leaf Extract

Also known as: Lagerstroemia speciosa, Corosolic Acid Extract, Banaba

C
Evidence

Banaba leaf extract from Lagerstroemia speciosa contains corosolic acid and has been traditionally used in Southeast Asian medicine for blood sugar management. Preliminary research suggests potential glucose-regulating properties, though clinical evidence remains limited.

Primary uses

  • Blood sugar management
  • Glucose metabolism support
  • Traditional antidiabetic use

How it works

  • Corosolic acid may enhance glucose uptake via GLUT4 translocation
  • Potential inhibition of alpha-glucosidase enzymes
  • Possible insulin-mimetic activity

Dosage

Typical range
32-48 mg corosolic acid daily (equivalent to 1,600-2,400 mg leaf extract at 2% standardization)
Timing
With meals or as directed
With food
May be taken with or without food; with meals may optimize glucose-related effects
Duration
Effects may develop over weeks; long-term safety data limited
Special populations
Pregnant/nursing women should avoid; individuals on diabetes medications should consult healthcare provider

Forms

  • Leaf extract powder· 70/100
  • Standardized extract (2% corosolic acid)· 70/100

Safety

Common side effects

  • Generally well-tolerated
  • Mild gastrointestinal upset reported in some users

Contraindications

  • Pregnancy and breastfeeding
  • Concurrent use with anti-diabetic medications may increase hypoglycemia risk
  • Kidney or liver disease (limited safety data)

Evidence notes

Several small clinical trials and in vitro studies show promise for glucose regulation, but evidence is preliminary with limited high-quality RCTs. Most data from traditional use and animal models.

Grade C: Mostly observational or small trials; mechanism is plausible but unproven at scale.

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Medical disclaimer. This page is educational and does not replace advice from a qualified healthcare provider.