Product Information
Registration Status: ActiveDIVERIN TABLET 80mg is approved to be sold in Singapore with effective from 2001-04-10. It is marketed by ZIWELL MEDICAL (S) PTE LTD, with the registration number of SIN11688P.
This product contains Gliclazide 80mg in the form of TABLET. It is approved for ORAL use.
This product is manufactured by KOLON PHARMACEUTICAL INC in KOREA, and in REPUBLIC OF.
It is a Prescription Only Medicine that can only be obtained from a doctor or a dentist, or a pharmacist with a prescription from a Singapore-registered doctor or dentist.
Description
Gliclazide is an oral antihyperglycemic agent used for the treatment of non-insulin-dependent diabetes mellitus (NIDDM). It belongs to the sulfonylurea class of insulin secretagogues, which act by stimulating β cells of the pancreas to release insulin. Sulfonylureas increase both basal insulin secretion and meal-stimulated insulin release. Medications in this class differ in their dose, rate of absorption, duration of action, route of elimination and binding site on their target pancreatic β cell receptor. Sulfonylureas also increase peripheral glucose utilization, decrease hepatic gluconeogenesis and may increase the number and sensitivity of insulin receptors. Sulfonylureas are associated with weight gain, though less so than insulin. Due to their mechanism of action, sulfonylureas may cause hypoglycemia and require consistent food intake to decrease this risk. The risk of hypoglycemia is increased in elderly, debilitated and malnourished individuals. Gliclazide has been shown to decrease fasting plasma glucose, postprandial blood glucose and glycosolated hemoglobin (HbA1c) levels (reflective of the last 8-10 weeks of glucose control). Gliclazide is extensively metabolized by the liver; its metabolites are excreted in both urine (60-70%) and feces (10-20%).
Indication
For the treatment of NIDDM in conjunction with diet and exercise.
Mechanism of Action
Gliclazide binds to the β cell sulfonyl urea receptor (SUR1). This binding subsequently blocks the ATP sensitive potassium channels. The binding results in closure of the channels and leads to a resulting decrease in potassium efflux leads to depolarization of the β cells. This opens voltage-dependent calcium channels in the β cell resulting in calmodulin activation, which in turn leads to exocytosis of insulin containing secretorty granules.
Pharmacokinetics
- Absorption
- Rapidly and well absorbed but may have wide inter- and intra-individual variability. Peak plasma concentrations occur within 4-6 hours of oral administration.
- Distribution
- Metabolism
- Extensively metabolized in the liver. Less than 1% of the orally administered dose appears unchanged in the urine. Metabolites include oxidized and hydroxylated derivates, as well as glucuronic acid conjugates.
- Elimination
Toxicity
LD50=3000 mg/kg (orally in mice). Gliclazide and its metabolites may accumulate in those with severe hepatic and/or renal dysfunction. Symptoms of hypoglycemia include: dizziness, lack of energy, drowsiness, headache and sweating.
Active Ingredient/Synonyms
1-(3-Azabicyclo(3.3.0)oct-3-yl)-3-(p-tolylsulfonyl)urea | 1-(Hexahydrocyclopenta(c)pyrrol-2(1H)-yl)-3-(p-tolylsulfonyl)urea | Gliclazida | Gliclazidum | N-(4-Methylbenzenesulfonyl)-N'-(3-azabicyclo(3.3.0)oct-3-yl)urea | Gliclazide |
Source of information: Drugbank (External Link). Last updated on: 3rd July 18. *Trade Name used in the content below may not be the same as the HSA-registered product.