while ssri's can be terrible especially on their own for BPs, they have been sucessfully used independantly in some patients with mild illness, also they can be really good in conjunction with mood stabilisers. For me mood stabilisers alone are not enough... but everyone is different.
I would suggest to be aware of what drugs you are on and how you are doing and if things aren't working then ask you doctor for a med change, if they don't listen then get a second opinion cos as we can see from this thread, not all doctors are good! Like Wendy says, it shouldn't take years for the doctors to try something else rather than pumping higher doses of something that isn't working into you...