In order for individuals to work as pharmacists, they must earn a Doctor of Pharmacy from a college or school of pharmacy. Programs of this nature typically take four years to complete and prepare students for the series of examinations that are necessary to receive a license to practice pharmacy. This credential also allows these graduates to dispense prescription medicines, as well as manage and maintain pharmacies. Over the course of their studies, prospective pharmacists study medical chemistry, drug behavior, drug metabolism and drug therapy. In addition, they acquire the skills they will need when communicating with patients and health care providers.