Haloperidol (Haldol) is indicated in the treatment of behavior issues in a patient with Alzheimer's disease, but can be harmful to a patient with dementia caused by Parkinson's disease.
Its sufferers are often treated with haloperidol, which blocks the receptor molecules that dopamine stimulates, but this drug does not work well in everyone and can have unpleasant side-effects.
Paul Sanberg, a neuroscientist at the University of South Florida in Tampa, and his colleagues, have found that a nicotine patch enhances the ability of haloperidol to suppress the symptoms of Tourette's.