Hi Tara!

I was put on Metformin about the same time that I started low carbing and I can't really say one way or the other whether it actually helped my weight loss. I know that it didn't hurt it. The diet itself does a lot towards decreasing insulin production and insulin resistance. I think the Metformin helps in getting you back to normal more quickly, but once you're there it doesn't do much more to help with the weight loss.