The process of prescribing accounts for a fair number of pharmacy laws and regulations. These set forth what can be prescribed, by whom, in what manner, and in what amount. There are explicit instructions and requirements set forth that list the information that must appear on a prescription, the prescription label, and in the prescription record. The laws and regulations discussed in this chapter apply to the medication prescribing and pharmacy prescription process and should not be confused with laws and regulations governing the medications that the pharmacy obtains from a manufacturer, wholesaler, or other authorized sources. Some of the legal provisions apply to all medications, while others depend on whether it is a controlled substance or not. It is important for the pharmacy professional to be very familiar with these laws and regulations as they contribute to the foundation of pharmacy practice and impact the day-to-day pharmacy and pharmacist activities.