Modification of glybenclamide hypoglycaemia by verapamil in rabbits.

The study was designed to demonstrate the interaction between verapamil and glybenclamide on blood glucose in rabbits. Glybenclamide (0.05 mg/kg, po) induced hypoglycaemia was observed 1 h after treatment and persisted till 3 h. Verapamil (8 mg/kg, sc) per se produced hyperglycaemia which lasted for 2 1/2 hr. Concurrent administration of verapamil was found to impair significantly the hypoglycaemic response of glybenclamide.