Efficacy and Safety of Galantamine for Improving Dysfunction in People With Bipolar Disorder

Approximately 2.6% of Americans age 18 and older, or 5.7 million people, suffer from bipolar disorder. The manic and depressive episodes associated with bipolar disorder prevent normal functioning in individuals with the disorder, but functional impairment can occur even when bipolar disorder is in remission. Previous research indicates that this impairment in stable individuals with bipolar disorder is linked to neurocognitive deficits, such as problems with memory and attention. The drug extended release galantamine increases the level of acetylcholine, a neurotransmitter important for memory, available in the brain. This drug has already been approved by the FDA to treat neurocognitive impairment in Alzheimer's disease patients. This study will examine whether administering the drug to individuals with bipolar disorder who are in remission can also reduce their neurocognitive deficits and improve the quality of their life. The study will also examine the safety of the drug for use in the obsessive-compulsive disorder population. Participation in this study will last about 18 weeks and will involve six study visits. Each of the first two visits will include 2 hours of clinical, physical, and self-report tests, the first for screening and the second to establish physical and mental health baseline measurements. Participants will then be randomly assigned to receive either galantamine or placebo daily for 16 weeks, and they will be provided with enough of the assigned pill to last until the next visit. Half hour visits on Weeks 4, 8, and 12 will consist of psychological self-report tests and interviews, clinical assessment of side effects from the drug, and the determination by the examining doctor and participant whether to increase, decrease, or maintain the same level of the drug. Participants will also be given enough of the drug to last until the next visit. The final visit, on Week 16, will last 2 hours and will consist of the same tests administered at the baseline visit in addition to the neuropsychological tests administered at the screening visit. The full range of tests will measure physical health, verbal memory, mental flexibility, attention, life impairment, and life satisfaction.