The sulphonylurea with relative longer duration of action is:: (A) Chlorpropamide, (B) Tolbutamide, (C) Glibenclamide, (D) Glipizide
Answer is A. The duration of action of various sulfonylureas is given below:
Tolbutamide: 6-8 hours
Glipizide: 10-16 hours
Glibenclamide: 16-24 hours
Chlorpropamide: 30-36 hours