I have been on Metformin for 3 months now, firstly I tried normal Metformin but made me sick, stomach pains, and bad runs. Apparently levothyroxine can raise your blood sugar levels, so for this reason I was put on Metformin slow release, and I space my other medication out. My blood test has come down it was 48 now 42, but my liver function test is not right, I'm still taking 1000 Metformin, told to do urine test and further blood test in 2weeks. I'm uncertain if this is good news or not.