Glipizide is used to help lower blood sugar levels in people with type 2 diabetes; it is taken as an adjunct to diet and exercise and sometimes with other medications when needed[3][5][7].
Glipizide belongs to the sulfonylurea class of oral medications. Its primary action is to stimulate the pancreas to release more insulin, thereby increasing circulating insulin levels and helping the body use insulin more efficiently[1][4][6]. This works only for individuals whose bodies still produce insulin, which is why glipizide is not used to treat type 1 diabetes or diabetic ketoacidosis[5].
The medication acts by binding to pancreatic beta cells, causing a series of events that lead to insulin release. These include closing ATP-sensitive potassium channels, causing cell depolarization, opening voltage-sensitive calcium channels, and promoting calcium influx, which triggers insulin secretion[1][4][2]. Glipizide may also increase the sensitivity and number of insulin receptors and help peripheral tissues utilize glucose more effectively[2].
Because of its efficacy, lower cost, and availability, glipizide is commonly prescribed for type 2 diabetes, either alone (if metformin is unsuitable) or in combination with other anti-diabetic agents[3][5].
References
- [1] Glipizide: Uses, Interactions, Mechanism of Action – DrugBank
- [2] Mechanism of action of the second-generation sulfonylurea glipizide – PubMed
- [3] Glipizide – StatPearls
- [4] Glipizide – Wikipedia
- [5] Glipizide: MedlinePlus Drug Information
- [6] Glipizide Mechanism of Action: How This Sulfonylurea Works – GoodRx
- [7] Glipizide (Glucotrol) – Uses, Side Effects, and More – WebMD