NSC antagonists are disclosed as useful in the treatment of dementia, in delaying the onset of dementia, and in the prevention of dementia. Dementia so treated may be, for example, Alzheimer's Disease (AD). NSC antagonists for treating dementia such as AD may be administered alone, a) in combination with other drugs used for treating dementia, b) in combination with drugs that stabilize or increase blood plasma glucose levels, or with both a) and b). Pharmaceutical compositions, dosage forms, an...