The antidiabetic activity of an extract from the leaves of Lagerstroemia speciosa standardized to 1% corosolic acid (GlucosolTM) has been
demonstrated in a randomized clinical trial involving Type II diabetics (non-insulin-dependent diabetes mellitus, NIDDM). Subjects received
a daily oral dose of GlucosolTM and blood glucose levels were measured. GlucosolTM at daily dosages of 32 and 48 mg for 2 weeks showed a
significant reduction in the blood glucose levels. GlucosolTM in a soft gel capsule formulation showed a 30% decrease in blood glucose levels
compared to a 20% drop seen with dry-powder filled hard gelatin capsule formulation (P < 0.001), suggesting that the soft gel formulation
has a better bioavailability than a dry-powder formulation.
© 2003 Elsevier Science Ireland Ltd. All rights reserved.