Not leading cause of suicide; leading cause of death. He's saying if this thing killed those two men, that's 1/320, which is (wayyy) more than poison (top 1 currently for 25-34, ~1/10000). You'd need to adjust for how many women actually take the pill; after a cursory glance a conservative estimate seems to be 10%, but please don't quote me on that.
I think my comment still applies. It's not reasonable to imagine that women would be subject to a male death/suicide rate by taking this drug. Gender has a larger effect on those rates than the drug likely does.
http://www.worldlifeexpectancy.com/usa-cause-of-death-by-age...