I take metformin as a diabetic medicine. It did little or nothing for me in terms of fat distribution.
I would also like to warn non-diabetic people about the fact that taking this drug can cause dangerous drops in blood sugar that can be life threatening, along with placing extra strain on liver function. As with any modern drug, a medical professional needs to be consulted to prescribe and monitor its effects on your system.
Metformin is not usually considered an HRT drug but when discussing its use as part of a gender transition the discussion it will fall under rule #8:
8. The discussion of hormone replacement therapy(HRT) and it's medications are permitted, with the following limitations:
A. Advocating for or against a specific medication or combinations of medications for personal gain is strictly prohibited.
B. Discussing the means to acquire HRT medications without a prescription, and self medication without a doctors care is prohibited.
C. Discussing dosages is strongly discouraged to prevent information obtained on this site from being used to self medicate.
We can not in good conscience condone the self administering of these medications. Not only may self medication be illegal, but HRT medications can cause serious health problems, and many have the potential for life-threatening side effects that can only be detected and prevented with proper medical supervision.