PARIS--(BUSINESS WIRE)--Regulatory News: Ipsen (Paris:IPN) (Euronext: IPN; ADR: IPSEY) today announced top line results of GuidAge®, the longest (5 years) and largest (2,854 subjects) European study in the prevention of Alzheimer’s Dementia (AD). This trial was conducted according to the most stringent international standards. The aim of this study was to assess the efficacy of a 5-year treatment with EGb 761® in the prevention of Alzheimer’s Dementia in a population of elderly aged 70 or more, with memory complaint spontaneously expressed to their family physician and who lived at home at the inclusion in the study.