I take 500 mg every day (once a day). Basically I found the even low doses of GH elevate my glucose levels so I need it. Given my low levels of GH usage (~1-2 ius 4-5 days/week) over the years, I don't need the more "standard" 500 mg twice a day dose that the gentleman above uses.
It does soften the stool, but that's not a bad thing. If you start using it start with a half pill for a couple of days and then go to a whole. Stay on that for a few days before going to 2 pills a day (should you desire to get to that level otherwise just stay at 1 like I did).
I think Metformin coul probably help you stay a little leaner, but try it out. May not work for you.