At one time, nearly all prescriptions were compounded. With the advent of mass drug manufacturing in the 1950s and ’60s compounding rapidly declined. The pharmacist’s role as a preparer of medications quickly changed to that of a dispenser of manufactured dosage forms, and most pharmacists no longer were trained to compound medications. However, the “one-size-fits-all” nature of many mass-produced medications meant that some patients’ needs were not being met.