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Study sheds light on medication treatment options for bipolar disorder

For depressed people with bipolar disorder who are taking a mood stabilizer, adding an antidepressant medication is no more effective than a placebo (sugar pill), according to results published online on March 28, 2007 in the New England Journal of Medicine. The results are part of the large-scale, multi-site Systematic Treatment Enhancement Program for Bipolar Disorder (STEP-BD), a $26.8 million clinical trial funded by the National Institutes of Health's National Institute of Mental Health (NIMH).

Bipolar disorder, a sometimes debilitating illness marked by severe mood swings between depression and mania, is usually treated with mood stabilizers such as lithium, valproate, carbamazepine or other medications that reduce mania. However, depression is more common than mania in bipolar disorder, and depressive episodes tend to last longer than episodes of mania. Antidepressant medications are often used in addition to a mood stabilizer for treating bipolar depression, but they are thought to confer a serious risk of a switch from a depressive episode to a manic episode.

Finding the right treatment balance for people with bipolar disorder is a constant challenge; STEP-BD aims to identify the best treatment options. "Treating depression in people with bipolar disorder is notoriously difficult," said NIMH Director Thomas R. Insel. "STEP-BD sought to determine if adding an antidepressant to a mood stabilizer is effective and safe in treating depressive episodes. The results suggest that antidepressants are safe but not more effective than placebo as assessed in a large number of people with bipolar disorder. "

Lead author Gary Sachs, M.D., of Massachusetts General Hospital and colleagues studied 366 participants at 22 sites across the country. Unlike most clinical studies, participants were recruited from clinical settings and were included in the study even if they were being treated for co-existing disorders such as substance abuse, a
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Contact: Colleen Labbe
NIMHPress@mail.nih.gov
301-443-4536
NIH/National Institute of Mental Health
28-Mar-2007


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