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Maximuscle’s Maxifuel Viper Boost is a stimulant version of our best selling energy drink, Viper. This advanced formula contains a whole host of exciting and innovative nutrients: L-Carnitine, taurine, glucuronolactone, bitter orange peel, potassium and magnesium gluconate, together with high levels of caffeine. All designed to improve mental performance and boost energy levels, you will feel this extreme version work within 15 minutes of consuming our great tasting energy drink. Since we launched the amazing Viper Boost formula for people that wanted something ‘more’ than a normal energy and stimulant drink, the success of it has astounded us. It is now the best selling powdered stimulant drink in the UK. Why people keep buying it and using it is obviously because it works. Take your performance to new levels with Viper Boost.