Introduction
Voglibose is an alpha-glucosidase inhibitor used for lowering post-prandial blood glucose levels in people with diabetes mellitus. It is made in India by Ranbaxy Labs and sold under the trade name Volix.
Uses
Voglibose is an alpha-glucosidase inhibitor indicated in the management of postprandial blood glucose in patients with type II diabetes.
For the treatment of diabetes. It is specifically used for lowering post-prandial blood glucose levels thereby reducing the risk of macrovascular complications.
Associated Conditions
Pharmacodynamics
Voglibose, an alpha-glucosidase inhibitor, is a synthetic compound with potent and enduring therapeutic efficacies against disorders of sensory, motor and autonomic nerve systems due to diabetes mellitus. The drug was approved in Japan in 1994 for the treatment of diabetes, and it is under further investigation by Takeda for the treatment of impaired glucose tolerance. Alpha-glucosidase inhibitors are oral anti-diabetic drugs used for diabetes mellitus type 2 that work by preventing the digestion of complex carbohydrates (such as starch). Complex carbohydrates are normally converted into simple sugars (monosaccharides) which can be absorbed through the intestine. Hence, alpha-glucosidase inhibitors reduce the impact of complex carbohydrates on blood sugar.
Mechanism of Action
Alpha-glucosidase inhibitors are saccharides that act as competitive inhibitors of enzymes needed to digest carbohydrates: specifically alpha-glucosidase enzymes in the brush border of the small intestines. The membrane-bound intestinal alpha-glucosidases hydrolyze oligosaccharides, trisaccharides, and disaccharides to glucose and other monosaccharides in the small intestine. Acarbose also blocks pancreatic alpha-amylase in addition to inhibiting membrane-bound alpha-glucosidases. Pancreatic alpha-amylase hydrolyzes complex starches to oligosaccharides in the lumen of the small intestine. Inhibition of these enzyme systems reduces the rate of digestion of complex carbohydrates. Less glucose is absorbed because the carbohydrates are not broken down into glucose molecules. In diabetic patients, the short-term effect of these drugs therapies is to decrease current blood glucose levels: the long term effect is a small reduction in hemoglobin-A1c level. (From Drug Therapy in Nursing, 2nd ed)
Absorption
Slowly and poorly absorbed. The reported pharmacokinetic parameters of voglibose with metformin are Cmax corresponds to 1.38 mcg/ml while AUC is 8.17 mcg.h/ml and tmax is of 2.5 hours.
Half Life
The half-life of voglibose is very similar to the one found for metformin and it is reported to be of 4.08 hours.
Dosage
Pediatrics: The safety and effectiveness of Voglibose in children has not been established.
Geriatrics: Since elderly patients generally have a physiological hypofunction, it is desirable that such caution be taken as starting the administration at a lower dose (eg, 0.1 mg at a time). Furthermore, this drug should be carefully administered under close observation, through the course of the disease condition, with careful attention to the blood sugar level and the onset of gastrointestinal symptoms.
