How can diabetes medication cause low blood sugar?

Low blood sugar is called hypoglycemia, or hypo for short. Generally, but not always, hypos only happen to diabetics who are on certain medications. Insulin and some pills can cause hypos if there is not enough blood sugar for them to play with. This can happen because you took to
much medication, ate too little food, had more than your usual amount of exercise, or for unknown reasons.

Hypos are the cost of doing business with some meds, especially insulin. A properly controlled insulin-using diabetic can expect two hypos per month. If you have more than that, you are over-medicated.