There are a couple of new gene tests that are "supposed" to help do what you are talking about. I only know one person who has done it. There is a thread on "Genetic Testing" in the psyche med section. This persons experience turned out to not be good. So who knows. These tests are very new and too knew to tell how good they will work. My pdoc says they are supposed to start using them. It is community mental health and they are broke so I doubt it. You could ask your pdoc about them.

Like live2ski66 says it is basically a trial and error crap shoot. If your meds are working stay on them. If they quit working try something else.

http://forums.psychcentral.com/psych...-medicine.html