A functional drinks range that claims to relieve jet lag is being launched next year.

Mile High, which is described as an all-natural juice-based tonic, has been developed to "boost the immune system and help the body cope better with flying" through a combination of vitamins, minerals and antioxidants.

Founders Richard Hammond, who worked in aircrews for 15 years, and nutritionist Stuart Roberts plan to sell Mile High in airports, cafes, hotels and major multiples.

"We are not a health drink but not just another juice either," said Hammond. "With Mile High we have worked hard to find a drink that would help people to combat the bad effects of air travel."

He claimed each ingredient was proven to help with the different symptoms that can be experienced when people fly, and could alleviate side effects such as the inability to sleep during a flight, digestive problems, dehydration, travel sickness and viruses.

Hammond added that the drink was aimed at anyone who takes flights, especially long haul, and could be consumed immediately before, during and after a trip.

It will be available in two varieties, original and pomegranate, with an rsp of £1.99 for a 250ml bottle.