Which of the following does not cause Insulin release-

Ans. is 'a' i.e., Rosiglitazone o Oral hypoglycemic drugs may be divided into two groups. 1. Group 1 These drugs reduce plasma glucose by stimulating insulin production, therefore called insulin secretogogues. Hypoglycemia is a well known side effect. Examples are: i) Sulfonylureas: first generation (chlorpropamide, tobutamide); second generation (Glimipiride, glyburide, glipizide, gliclazide). ii) Megalitinnide/D-phenylalanine analogues: Nateglinide, Rapaglinide. 2. Group 2 These drugs reduce blood glucose without stimulating insulin production, therefore are insulin nonsecretogogues. These durgs do not cuase hypoglycemia when used alone and can cause hypoglycemia, only when used with other oral hypoglycemics. Examples are: i) Biguanides: Metformin, Phenformin ii) Thiazolidinediones: Rosiglitazone, Pioglitazone, Troglitazone. iii) alpha-glucosidase inhibitors: Acarbose, miglital.