It is not possible to draw any firm conclusions about the use of topiramate in clinical practice from this evidence .
BACKGROUND Bipolar disorder is a common recurrent illness with high levels of chronicity .
Previous trials have suggested that the anticonvulsant topiramate may be efficacious in bipolar disorder .
This is an up date of a previous Cochrane review ( last published 2006 ) on the role of topiramate in bipolar disorder .
OBJECTIVES To assess the effects of topiramate for acute mood episodes  in bipolar disorder in adults compared to placebo , alternative pharmacological treatment , and combination pharmacological treatment as measured by treatment of symptoms on specific rating scales for individual episodes .
Topiramate monotherapy in the management of acute mania: results of four double-blind placebo-controlled trials.
OBJECTIVE To evaluate the efficacy and tolerability of topiramate monotherapy in adults with acute manic or mixed episodes of bipolar I disorder . METHODS In four trials , adults hospitalized with acute mania , a diagnosis of bipolar I disorder , history of > or = 1 previous manic or mixed episodes , and > or = 20 Young Mania Rating Scale ( YMRS ) score were r and omized to double-blind treatment with topiramate ( target doses : 200 , 400 , or 600 mg/day ) or placebo ; two trials included an active comparator ( lithium , 1500 mg/day ) . The core study duration in all trials was 3 weeks ; three trials also had 9-week double-blind extensions . The primary efficacy variable was mean change from baseline in YMRS in the core 3-week study . RESULTS Changes in YMRS score during 3 weeks were not significantly different for topiramate versus placebo ( mean YMRS reductions , -5.1 to -8.4 ) . Mean YMRS reductions in lithium-treated groups were significantly greater ( p < or = 0.001 versus placebo and topiramate ) . A similar pattern was observed after 12 weeks of double-blind treatment in studies with double-blind extensions . Paresthesia , appetite decrease , dry mouth , and weight loss were more frequently associated with topiramate than with placebo . CONCLUSIONS These studies do not support the efficacy of topiramate as monotherapy in acute mania or mixed episodes in adults with bipolar I disorder . Topiramate was not associated with mood destabilization measured as mania exacerbation or treatment-emergent depression . Lithium was confirmed as an effective therapy in this population
It is not possible to draw any firm conclusions about the use of topiramate in clinical practice from this evidence .
BACKGROUND Bipolar disorder is a common recurrent illness with high levels of chronicity .
Previous trials have suggested that the anticonvulsant topiramate may be efficacious in bipolar disorder .
This is an up date of a previous Cochrane review ( last published 2006 ) on the role of topiramate in bipolar disorder .
OBJECTIVES To assess the effects of topiramate for acute mood episodes  in bipolar disorder in adults compared to placebo , alternative pharmacological treatment , and combination pharmacological treatment as measured by treatment of symptoms on specific rating scales for individual episodes .