A soft gelatin capsule and method to deliver an efficable dose of Lagerstroemia speciosa L. (marketed by Soft Gel Technologies under the trademark Glucosol™) for the assistance and maintenance of moderate weight loss through blood sugar maintenance. The product relies on the effects of corosolic acid on blood sugar levels to derive a healthy weight loss effect for Type II diabetics (non-insulin dependent) and healthy non-diabetics and the improved absorption of an oil based delivery system. The product provides safe and sustainable weight loss when combined with a restricted calorie diet and regular exercise. Its benefits include improvement of cardiovascular health, normalized blood sugar levels, and improved physical appearance with the positive psychological effects associated with successful and safe weight loss/maintenance.