No one knows more about a broad range of prescription drugs and other medications than your pharmacist. Pharmacists study all the aspects of prescription drug therapy, with an emphasis on safe patient care. The Doctor of Pharmacy (PharmD) degree requires at least two years of col- lege followed by four years of professional pharmacy study. To keep their licenses, pharmacists must take several new courses every year to every two years, depending on the state they are licensed in. Some pharma- cists take extra training to specialize in such areas as geriatric pharmacy. .