I have been on Glyburide for little over a year now, with good results. However, I have been having low blood sugars and my Doctor just reduced my dosage. I have always been overweight and my hunger is very strong, my Doctor suggested Byetta to help with the hunger and hopefully lose weight. Do you have to wait one hour after the shot and what if you eat before the hour is up? What if, you take the shot and your meal is delayed for some reason, will I become ill?