I had about a dozen F's from a community college and was academically dismissed. I took 4 years off, went in the military, got my priorities straight, came back to school, got a 3.76 cum, did good on the MCAT and successfully applied and was accepted to a DO school.
However, the allopathic schools were essentially closed to me, because AMCAS averages the retaken courses. Osteopathic schools, (AACOMAS) takes the higher of the retaken grades and leaves math out of the science GPA. So, to a DO school, I had a fantastic science GPA and and a slightly above average overall GPA. BUT, to allopathic schools, I had a pathetic GPA, like a 2.5. This issue did come up in my interviews, although looking back, I probably stressed about it way too much.
Anyway, I'm more than happy to have the chance to go to medical school and I'm very appreciative that DO schools do indeed 'look beyond the numbers'. I'm not saying a DO school is better than an MD, or any of that SDN flame war nonsense, but DO schools do tend to be receptive to an older, non-trad, 'second chance' student