Answer:
typically, most stand alone pharm d. programs take four years to complete, as any other [college] degree would.
if you were to engage in a bachelor's degree program, it would take twice as long, approximately eight years, but, evidently, there are several more benefits to having that degree.
if you don't want to spend eight years in that program, you can always enter into a program after two or three years of undergraduate study so you can start practicing as a pharmacist sooner :)
~hope i helped ouo have a nice rest of ur day~
lots of love,
lee