Hi there!
Most (if not all) other universities you would look at for pharmacy would require the same statement as you will be using for medicine, so regardless you will be in the same situation.
My advice to you would be to definitely relate your personal statement to medicine if that is the course you really want. However, do add bits in that would be beneficial for a pharmacy degree also. If you have work experience in a pharmacy, definitely add it onto your statement as I think it could also help towards medicine as well.
Hopefully this helps a bit!
Jorja - LJMU Student Rep