Close to six million Americans suffer from bipolar disorder.
It is a condition that causes alternating periods of depression and mania highs and lows.
Most doctors prescribe a combination of mood stabilizers with antidepressants to treat bipolar.
But, a study conducted by researchers at the University of Colorado, found antidepressants may be of little or no help for treating bipolar depression.
Instead, results showed that adding intensive psychotherapy to medications helped stabilize depression episodes.
Doctors say more research is needed. Dr. Michael Allen of the University of Colorado says, "The long term goal is to find out what does work in bipolar depression and our study suggests anti depressants don't."
Doctors say this is a huge step forward in the search for ways to control the disorder.