M.R.
I think the side effects will depend on what you are taking the Metformin for. Most people that I know are taking this for insulin resistance, diabetes, or a variation of metabolic syndrome where the body tends to be in an insulin resistant state of some kind. If this is what you are taking the drug for, then stopping it may not be a very good idea at all. Metformin is a great drug when used properly and in the right dosages. I am so sorry to hear that you are quitting your job and also losing your benefits. I hope that this is a decision that you really want and not one you were forced into. However, there are doctors out there that can work with the major drug companies to make sure that you can get your prescriptions for free or at a really reduced cost. Please talk to your doctor and ask for help before you stop taking a drug that you may really need. If it really isn't working and your symptoms have not improved or changed, talk to your doctor about that and make a new plan.