FireStar is a new energy product that is small enough to fit in a wallet, contains only 10 calories and claims to offer a sustained energy boost that improves mental and physical performance for up to four hours. Andrew Guise, who devised Firestar, said: "FireStar contains twice the energy-giving properties found in a single can of Red Bull. FireStar releases energy slowly over time so there is no huge rush and no crash, just sustained energy to make you feel clear-headed and energised. Simply put, it is a smarter solution."

FireStar comes in sachets which retail at £1, available in Cola, Cherry and Mint flavours and in two strengths two hours and FireStar Max, which lasts up to four hours. Retailers can order online to get enhanced terms via a rewards system that gives each retailer their own code.

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