Many people are familiar with over the counter (OTC) medications, which are drugs that can be found at a store. However, over 50% of all medications are prescribed by a doctor. Prescription drugs are much safer than OTC medications because they do not have the possibility of overdose. Most commonly, prescription pills are taken to treat chronic illnesses such as diabetes or high blood pressure. People take prescription pills for many reasons other than those listed above. For example, people might take prescription drugs to get high or to avoid getting high.