Beet It Sport Nitrate 400 Shot

£20 (pack of 15), beet-it.com

A go-to for several elite sports teams, Beet It’s Sport Nitrate 400 shots deliver a dose of dietary nitrate (400mg) per 70ml shot, derived solely from concentrated beetroot juice. The product has been used in numerous research trials on sports performance, with dietary nitrate supplementation shown to significantly reduce the oxygen cost of exercise – by as much as five per cent – and delay the onset of fatigue by 16 per cent. Consume one or two shots one to three hours before training, and up to six days before competition.