II. Background
- Listed for historical purposes only
- See Second Generation Sulfonylurea instead
III. Indications
-
Type II Diabetes Mellitus (historical)
- Replaced by Second Generation Sulfonylurea agents
IV. Mechanism
-
Sulfonylureas trigger Insulin release from pancreatic beta cells
- Sulfonylureas stimulate Potassium channel closure on pancreatic beta cell surface
- Secretagogues do NOT burn out the beta cells sooner
- Sulfonylureas may also increase tissue Insulin sensitivity
V. Medications
- Acetohexamide (Dymelor)
- Dose: 500 to 750 mg orally daily or divided twice daily
- Chlorpropamide (Diabinese)
- Dose: 100 to 250 mg up to 750 mg daily or divided twice daily
- Antidiuretic effect (used in Diabetes Insipidus)
- Tolazamide (Tolinase)
- Dose: 250-500 mg orally daily or divided twice daily
- Tolbutamide (Orinase)
- Dose: 1000 to 2000 mg orally daily or divided twice daily