In reality if you do your premed requirements your major does not matter in medical school unless you want to do bench research. I never use organic chemistry any more and having a basic knowledge base for biochemistry is useful and so it is included in most medical school curricula (although it was easier after having taken biochem in college).
Some of the top students in my med school were not science majors. One was a broadcast journalism major, one played in the NFL for 3 years before going back to college to get into medical school, and there were several humanities majors (philosophy, history, etc).
When I applied to medical school in 2003 the acceptance rates for bio majors was the same as history majors (around 35%) so get good grades, especially in your bio chem math and physics classes and do well on the MCAT, good luck.
Mitul Mehta, I interview lots of people for admission
Source: Quora Digest