Souvenaid is a dietary supplement in the form of a thick, yogurt-like drink[1] that is marketed as helping people with Alzheimer's disease.
[2] As of 2017, the product had failed to show a significant effect in decreasing the rate of cognitive decline or delaying progression of Alzheimer's disease, but appeared to cause minor improvement in verbal memory in some people in the very early stages of the disease.
[5] It was claimed that ingestion of the product indicated some potential slowing of the decline of measures related to cognition, function, brain atrophy, and disease progression.
[2][10] As of 2013 it was marketed through pharmacies in Brazil, the Netherlands, Belgium, Germany, Italy, the UK,[9] and Australia.
[12] In January 2014, the French regulatory authorities rejected the manufacturer's proposed marketing claims on the basis that target population and its nutritional needs were not well defined and the statistically weak data in the evidence provided.