An Extended-Release Form of Clonidine as an Anti-Manic Agent: An Add-On, Open-Label Study

Clonidine has been reported to be effective in a variety of hyperadrenergic states, including mania. It is generally well-tolerated and does not result in the severe adverse effects that are associated with many antipsychotics and mood stabilizers used in the treatment of mania, such as weight gain and akathisia. There is some suggestion that clonidine may be particularly effective in a subset of refractory cases and in patients who cannot tolerate antipsychotic medications or lithium. The investigators plan to to study an extended-release form of clonidine, which the investigators hope will be even better tolerated than the immediate-release form, as an antimanic agent. Subjects will receive an extended-release form of clonidine in addition to their usual medication regimen on the second day of this three-day study. Rating scales, a record of sleep, and a questionnaire of adverse effects will be recorded on each of the 3 days. Any medication changes made by the attending psychiatrist and prns administered will be recorded throughout the study. The investigators believe that studying as few as 10 subjects will give the investigators a sense as to whether the addition of clonidine is helpful in reducing manic symptoms and if the rate of adverse effects is unacceptable.