Examples of blood glucose-lowering pills are glyburide
(Micronase, Diabeta, and Glynase) and glipizide
(Glucotrol). Other drugs that can cause hypoglycemia include alcohol, quinine (used in treating malaria), pentamidine (used in treating Pneumocystis carinii pneumonia infection in patients with AIDS), and Vacor (rat poison).
The liver stores energy in the form of glycogen. During fasting, glycogen is broken down and converted into glucose.