Changing majors into pre pharmacy?

<p>So I am a senior in high school and I got accepted into UOP as a business major. Picking majors was hard for me since I had 3 majors that I wanted to choose from. In the end, I decided to pick business administration. Pharmacy was my second choice. I was wondering, if I go into UOP as a business major and if I don't like it, would I be able to switch into pre pharmacy? Plus, pharmacy is a competitive major.</p>