Combine mood stabilizers. After optimizing the dose of a single mood stabilizer, add a second one from a different class. In an open trial, adding oxcarbazepine, up to 2,400 mg/d, helped approximately one-third of 20 patients with refractory mood cycling.10 Lithium is generally considered less effective than anticonvulsants in rapid cycling, but at least one study showed it was equivalent to carbamazepine for this problem.35 Lithium combined with other mood stabilizers may be more effective than lithium monotherapy in refractory bipolar states.
Other options to consider in combination with mood stabilizers:
an antipsychotic, especially in the presence of psychotic symptoms, when mixed symptoms are present
clozapine, which can be a highly effective adjunct for refractory mood cycling and mixed states36 (but is a later adjunct because of required monitoring, common adverse effects, and risk of interactions with carbamazepine and benzodiazepines)
nimodipine, which has empiric support for complex mood cycling37 and is well-tolerated with fewer interactions than other mood stabilizers (but cost and need for frequent dosing make it a second-line adjunct)
supraphysiologic doses of thyroxine (≤0.4 mg/d, with T4 levels in the hyperthyroid range), which can improve response to mood-stabilizing regimens34 (but risks of inducing hyperthyroidism make this intervention third-line).
ECT can be effective for refractory rapid cycling, but some patients need more treatments than are usually necessary for mania or depression.
Related resources
Dubovsky SL. Clinical guide to psychotropic medications. New York: WW Norton; 2005.
Dubovsky SL. Treatment of bipolar depression. Psychiatr Clin North Am 2005;28:349-70.
Phillip Long, MD. Internet Mental Health. Online psychiatric diagnosis for the two-thirds of individuals with mental illness who do not seek treatment. www.mentalhealth.com/dis/p20-md02.html.
Drug brand names
Bupropion • Wellbutrin
Carbamazepine • Tegretol
Clonazepam • Klonopin
Clozapine • Clozaril
Fluoxetine • Prozac
Gabapentin • Neurontin
Lamotrigine • Lamictal
Levetiracetam • Keppra
Lithium • Lithobid, others
Lorazepam • Ativan
Memantine • Namenda
Methylphenidate • Concerta, Ritalin, others
Modafinil • Provigil
Nimodipine • Nimotop
Olanzapine/fluoxetine • Symbyax
Oxcarbazepine • Trileptal
Paroxetine • Paxil
Pramipexole • Mirapex
Pregabalin • Lyrica
Quetiapine • Seroquel
Riluzole • Rilutek
Selegiline • Eldepryl
Topiramate • Topamax
Tranylcypromine • Parnate
Valproate • Depakene, Depakote
Venlafaxine • Effexor
Verapamil • Calan, Isoptin, others
Zonisamide • Zonegran
Disclosures
Dr. Mostert reports no financial relationship with any company whose products are mentioned in this article or with manufacturers of competing products.
Dr. Dubovsky receives research/grant support from Eli Lilly and Company, Organon, Pfizer, UCB Pharma, anhd Forest Laboratories. He is a consultant to Oganon and Biovail Pharmaceuticals.