Exhibition visitors, suffering from nights out, may have been grateful for a drinks range from the United States that is claimed to soothe hangovers.
Hair of the Dog comes in three flavours - original, sugar free and sugar-free Night Time Formula - which contain combinations of vitamin C, L-glutamine, milk thistle extract and other active ingredients.
The Night Time Formula, which is to be drunk after a night out, does not contain caffeine or stimulants, so does not interfere with sleep.
The "hangover-relieving" drink, reportedly created by accident when doctors were working to create an energy formula for chemotherapy patients, could be drunk mixed with alcohol, it was claimed.
"The ingredients should help prevent the dehydrating effect of alcohol," said Steven Smith, CEO of brand owner Innovative Technologies Corporation of America. He said the product did not cut alcohol blood levels.