Other Vitamins and Minerals. Other nutrients can also help relieve muscle pains. A magnesium deficiency can cause muscle weakness and pain, while a lack of other B vitamins, like riboflavin, can also lead to muscle cramps and pain.
So my answer is that getting into medical school is pretty darn difficult. If you take a look at the medical school requirements page, you can see that I recommend a GPA of at least 3.5 and a MCAT score of at least 30. With these scores, you should have a chance to get into medical school. However, your chance for getting in also depends on the color of your skin.
Applying to medical school is a highly competitive process, where the demand is much greater than the number of available seats in U.S. schools. The odds are even higher for nontraditional students. In 1998-1999, the overall acceptance rate was about 42%. For applicants age 32 and older, the acceptance rate was 26%. While this may partly be due to age discrimination, GPA and MCAT scores seems to be the primary predictor. Most students apply to about a dozen medical schools.