Is that all?
Well, it's pretty "simple" then if that's the calculus. Get into medical school, score within the upper 25% to get into IM or better (you can get into IM with worse, but at 25%, it's a virtual lock), do the residency. 8 years temporal and 12 years working (because the expectation for residents is 60 if not 80), and you'll make $225k working at 60 hours if you're not working in the civil service (civil service works for 40 hours and pays between $160k and $180k).
The problem is that your history suggests that you were only average at pharmacy school, which would put you in the bottom quartile of medical school completions, although getting in is going to be challenging.
Let's assume you can afford it financially. Can you afford it temporally and also given that you're basically working for 0 for 8 years after the residency stipend offsets your medical school, would losing 8 productive years at $80k (what you'd make at 32 hours) be worth it?
I don't know, you aren't
@Lnsean who had good stats but also went far out of his way to break the cycle to get into medical school. You can ask him, but I doubt it's financially driven as he could have just done the investing gig if that was what he wanted. But you already seem to be in an occupational mismatch, so your dilemma really is, if money is what matters and not the job, is there anything else that I could do for 40 hours that would be worth giving up pharmacy? The answer is no, not even medicine. Why you would give up pharmacy for medicine is completely around the idea that you would enjoy working as a physician more than a pharmacist, because unless you enter dermaholiday or something in the $350k or higher range, the hour differential is not enough on its own to make up for the lost opportunity.
That said, I know of quite a number of pharmacists who made the transition to medicine and were happier people. I also know some who made the transition for monetary reasons who the majority of them are unhappy about it, because they found out that IM's salary versus working conditions were worse than pharmacy (imagine that).
If you cannot stand the idea of being a pharmacist in terms of working conditions, you are not going to enjoy medicine. Medicine is even more burdensome in terms of interference and bureaucracy. The difference is that you control the destiny in a way that we pharmacists only have a passing interest in.