At an earlier hearing, Melissa Reid, from Scotland, and Irish-born Michaella McCollum pleaded guilty to attempting to smuggle £1.5 million worth of cocaine out of Peru.
Today they were told by a Peruvian court they will both serve six years and eight months in jail.
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Shadow business secretary Rebecca Long-Bailey has called for "immediate" relief to prevent thousands of companies going out of business.
A spokesperson criticised the behaviour of a "small number" of fans at the game between Birmingham City and the Wolverhampton Wanderers.
Those taking part in the bizarre trend say the combination of fruit juices and hot water makes for a uniquely liberating experience.