I really have had good experiences with metformin. First, did he give you XR? That cuts down on the diarrhea drastically.

I've been on 500 mg/day for 3 years. At first it made it easier to lose about 20 lbs that I had gained since starting clozapine. Then it helped keep the weight off. My blood sugar came down from borderline to really good. I think my cholesterol came down too but I don't remember that; I just know I'm not on meds for it and I think I was near needing them before metformin.

Over time I lost another 10 lbs, so down 30 from when I started it.

Since I've been sick and eating so many carbs because they are the only thing I can digest safely I've gained 10 lbs back. Hopefully I'll feel well enough to eat normally or find some approximation of normal soon. This carb fest can't continue; I will not gain all that weight back.