Banaba Leaf

herbs

★★★★★

Banaba leaf (Lagerstroemia speciosa) is a traditional Ayurvedic and Southeast Asian herb known for its corosolic acid content, which may support blood sugar regulation. It has been studied for potential glucose management and metabolic health benefits, though evidence remains moderately strong.

Ready to try Banaba Leaf?

Shop top-rated Banaba Leaf supplements on Amazon UK

Buy on Amazon High Strength →

Affiliate link — we may earn a small commission at no extra cost to you.

Benefits

✓Blood sugar regulation and glucose metabolism support

✓May improve insulin sensitivity and glucose transport

✓Antioxidant properties with polyphenol content

✓Potential weight management support through metabolic effects

✓Traditional use for digestive and metabolic health

Dosage

Typical Dose

48-120 mg corosolic acid daily or 500-1000 mg leaf extract

Upper Limit

2000 mg daily of standardised extract

Timing

With meals, particularly before high-carbohydrate foods

Forms & Bioavailability

Standardised Leaf Extract (1-2% corosolic acid)

85%

Whole Leaf Powder

65%

Capsules (standardised)

80%

Tea/Infusion

60%

Side Effects

⚠Generally well-tolerated; mild gastrointestinal upset possible at higher doses

⚠May cause hypoglycaemia when combined with diabetes medications

⚠Rare allergic reactions in sensitive individuals

Interactions

⚡May potentiate diabetes medications (metformin, insulin) increasing hypoglycaemia risk

⚡Potential interaction with antihypertensive agents due to mild blood pressure effects

⚡May interact with other glucose-lowering supplements

Research Summary

Human studies demonstrate moderate efficacy for glucose control, with several trials showing 10-30% improvements in postprandial glucose levels. Corosolic acid has been identified as the primary active constituent. Further long-term safety and efficacy data are needed to establish optimal dosing protocols.

Compare Banaba Leaf with...

vs Vitamin D3 vs Magnesium vs Omega-3 (EPA/DHA)vs Creatine Monohydrate vs Ashwagandha (KSM-66)vs Zinc vs L-Theanine vs Vitamin B12 All comparisons →

The Bottom Line on Banaba Leaf

Banaba Leaf is moderately researched with promising but sometimes mixed evidence.It is most commonly used for blood sugar regulation and glucose metabolism support and may improve insulin sensitivity and glucose transport. As with any supplement, individual results vary. Start with the lower end of the dosage range and assess for 4-8 weeks before adjusting.

About Our Research

This profile is compiled from peer-reviewed research published on PubMed, the NIH Office of Dietary Supplements, and established nutritional science databases. Dosages reflect clinically-studied amounts from human trials where available. We update profiles as new research emerges. This is not medical advice — consult a healthcare professional before supplementing.

Top Rated Banaba Leaf on Amazon UK

We recommend choosing products with 4+ star ratings and verified reviews. Look for third-party tested brands.

Best Rated Banaba Leaf→High Strength Banaba Leaf→

Affiliate links — we earn a small commission at no extra cost to you.

Where to Buy Banaba Leaf

We recommend buying from reputable retailers. Check reviews and third-party testing.

Amazon UK →

Affiliate links — we may earn a commission at no extra cost to you.

Goal Guides for Banaba Leaf

See how Banaba Leaf can help with specific health goals:

Banaba Leaf for sleep Banaba Leaf for focus Banaba Leaf for energy Banaba Leaf for longevity Banaba Leaf for fat loss

Browse all goal guides →

Disclaimer: This information is for educational purposes only and is not medical advice. Always consult a healthcare professional before starting any supplement, especially if you have existing health conditions or take medication.