CVS Pharmacy must rely on prescription drug sales to remain in business, but Wal-Mart doesn’t need to add a huge markup to the prescription drugs they sell. The local temperature with the medicine producing country is one and the other country might be another, and also the avian temperature will be the other. Most drugs need to get stored at exact temperatures, so one in the things pharmacists learn within pharmaceutical quality training is the necessary steps to hold the facilities clean and in compliance with regulations.