UC doesn't care where you complete your prerequisites. As long as you complete them. They don't favor their own students. I don't recommend going to UC to complete your pre-reqs due to many different reasons. UC goes by quarter system, BUT unlike Ohio State, where the courses are 5 quarter credit hours, UC is only 3 credit quarter hours, so you have to take more than 1 quarter of EVERYTHING. I have to take 2 courses of statistics, 2 speech, 2 economics because 2 quarters at UC would give me 6 credits instead of just 1 quarter at OSU would give me 5 credit hours. Most of the pharmacy schools are in semester hours and they general require 3 semester hours of statistics, 3 semester hours of speech, etc...and 3 semester hours are equal to 5 credit hours. If I knew this before hand, I wouldn't transfer to UC.
They also don't care much about the PCAT in the beginning of the admission process. They will grant you an interview if you have a 3.5, doesn't matter what your PCAT score is. Then they will reject you later in April if your PCAT score is not good. They don't look at your overall application even when they tell you that they do. They don't care much about pharmacy experience. They have a very strange system.
I do sound bitter, but it's because I hate the system. I hate how I have to take 2 of everything (minus the science courses) to complete the pre-reqs for other schools.