Lagerstroemia Speciosa is used in the Diabetic Formula of the CardioTrim health supplement line.

Lagerstroemia speciosa (banaba) is a medicinal plant that grows in India, Southeast Asia and the Philippines. Traditional uses include brewing tea from the leaves as a treatment for diabetes and hyperglycemia (elevated blood sugar). The hypoglycemic (blood sugar lowering) effect of banaba leaf extract is similar to that of insulin – which induces glucose transport from the blood into body cells.

Banaba leaf extract contains a triterpenoid compound known as corosolic acid – which has actions in stimulating glucose transport into cells. As such, banaba plays a role in regulating levels of blood sugar and insulin in the blood. For some people, fluctuations in blood sugar and insulin are related to appetite, hunger and various food cravings – particularly craving for carbohydrates such as bread and sweets. By keeping blood sugar and insulin levels in check, banaba may be an effective supplement for promoting weight loss in certain individuals.

The blood sugar regulating properties of banaba have been demonstrated in cell culture, animal and human studies. In isolated cells, the active ingredient in banaba extract, corosolic acid, is known to stimulate glucose uptake. In diabetic mice, rats and rabbits, banaba feeding reduces elevated blood sugar and insulin levels to normal. In humans with type II diabetes, banaba extract, at a dose of 16-48mg per day for 4-8 weeks, has been shown to be effective in reducing blood sugar levels (5%-30% reduction) and maintaining tighter control of blood sugar fluctuations. An interesting “side-effect” of tighter control of blood sugar and insulin levels is a significant tendency of banaba to promote weight loss (an average of 2-4 lbs. per month) – without significant dietary alterations. It is likely that modulation of glucose and insulin levels reduces total caloric intake somewhat and encourages moderate weight loss.

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