Wellbutrin (not a ssri) has shown to be the least likely to induce manic episodes. In tests it showed the lowest percentage of people with BP and for that reason is often prescribed for BP folks too. But some may get manic on it too. I can't remember the exact numbers off the top of my head but it was like 4% got manic. There is a link some where with all the tests done with every antidepressant and most common disorders. If I find it I will post it.