just what can an MBA do for someone with a degree in pharmacy?

Pharmaceutical company  executive?

CVS, Rite Aid, Walgreens, that other huge company, all probably have
openings for MBAs who know the details of pharmacy ops.

In general, combined degrees allow you to get out of the starting
positions much sooner than without. Thus a Pharmacist would have to
have lots of work experience before they would be considered for a
management position in the parent organization. Of course, performance
has to match the degrees.

You could also start out with a short stint in an HMO as a Pharmacist,
and then work your way into a corporate position. It depends somewhat
on the pharmacy degree. If you have a Pharm.D coupled with an MBA you
have lots of options. e.g. After a short stint as a Pharmacy manager
at something like a Rite-Aid store you would be a strong candidate for
a Pharmacy management position at Rite-Aid or Wallgreens, and then
possibly into a director position at corporate (playing your cards
right, you are on the path to potential VP, CEO etc.--but by that time
your degrees will not really matter).