- 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
Watch Hollywood heartthrob Chris Pratt doing a flawless Essex accent after revealing his wife Anna Faris is the reason behind it.
It will be breezy and wet tonight as rain sweeps in from the west, meaning a miserable start to Sunday morning.
BBC Political Editor Nick Robinson has revealed Labour tried to recruit him to be Ed Miliband's spin doctor in the run-up to the election.