Maximuscle's Viper is the ultimate energy drink for use during weight training or increasing speed, whether you're running or cycling. It will help prevent dehydration and sustains energy, helping you to maintain your best performance for longer. Viper includes Branch Chain Amino Acids (BCAAs), which prevent the amino acid imbalances that could cause mental fatigue, leaving other sports drinks far behind. Its unique formulation delays fatigue and improves endurance, whilst retaining focus and motivation during each and every training session.