By Adam Bloodworth Drinks that supposedly enhance your mood are big sellers for Laura Willoughby of Club Soda, the first alcohol free bar in London – but scientists are more than sceptical about their effect, with one claiming CBD drinks and other ‘mood enhancers’ don’t work at all “This one’s got CBD in it,” says Laura Willoughby with a wry smile. “This has valerian which can help with sleep, and this has Gaba enhancers.” Willoughby, who runs London’s only non-alcoholic bar, is reeling off ingredients in their low-and-no range. The drinks may not contain the distilled stuff that typically get…