A list of the Most popular Blood Related Drugs. All of the most commonly prescribed medicines, drugs, and medications have been included. Prescription medication, as the name would imply, is medicine requiring a prescription from an authorized health practitioner such as a medical doctor, dentist, psychiatrist, or nurse practitioner. The FDA (Food and Drug Administration) governs which drugs require a prescription. Over the counter drugs (OTC drugs) are considered much safer, with a reduced risk of adverse side effects. In contrast, prescription drugs are considered potent enough to require an expert's supervision. Interestingly enough, the same drug can be both over the counter, and prescription based depending upon the drug's dosage. This list uses the drug's brand name where available, otherwise the generic name is provided.