- It is claimed that Souvenaid is designed to boost levels of certain nutrients which the makers say are necessary for synapse-building
- It contains omega-3 fatty acids, choline, used to make a nerve signalling chemical and uridine, which is important for metabolism
- Other nutrients in the drink include phospholipids, a component of cell membranes, and B vitamins
From today the drink will be sold in pharmacies throughout England, Scotland and Wales, or through the Souvenaid website.
More top news
It is going to feel far from spring-like other the next few days as we head into March.
Sam Galsworthy, uncle of missing Becky Watts, has spoken about the family's anguish as the search for her continues and they wait for news.
An online video showing a naked man apparently falling down the outside of Buckingham Palace has split opinion online - is it a hoax?