Topiramate
"Works wonders on rapid cycling.  I really love this medicine.  I know it is off label for bipolar, but wow!  I take it with another mood stabilizer, antipsychotic and a when required antipsychotic and antidepressant, and it has stabilized my Ultradian cycling that is so hard to treat.  I feel normal again.  I take 150mg.  Also can work in conjunction with other common weigh gainer medicines to cancel out the weigh gain effect - just a tip."