I'm on Brintellix. It's not Prozac and zyprexa. It's a serotonin agonic/antagonist, it hits a bunch of different serotonergic synapses, similar to the other SSRIs, but antagonizes 5-HT3 sites and is an agonist at the 5-HT1 sites.
It's supposed to be the best serotonergic drug out there for cognition, memory and attention. I'm not sure it's done a whole lot for me depression wise, but I do think it's helped cognitively.
Hope that helps some...