I have had great luck with Metformin.

What we are doing is called taking a medication 'off label'. Doctors are still studying this but it is showing good results and becoming more common. I am guessing you take great amounts of Seroquel (Quetiapine). Some studies have linked diabetes to high doses of Seroquel. The Metformin apparently has the additional benefit of staving this off.

I lost about 30lbs in three months and I credit the Metformin.

BUT, I was prescribed an anti-obsessive since and put it back on. Thankfully this medication was withdrawn. It has been a few months and the weight loss is happening again.