Elite Whey Protein 12 Hour Banana Nut 4.4lb (XT) Repair, Recovery, Growth. Specially formulated, Elite 12-Hour contains a fusion of the most Anabolic/Anti-Catabolic protein sources available, loaded with Glutamine, BCAAs, Essential Fatty Acids, and Zytrix, the advanced enzyme matrix that helps amplify absorption, to promote constant muscle growth and recovery for hours. Elite 12-Hour is a great source of protein anytime – morning, pre/post workout, and before bed – helping enhance and prolong the positive nitrogen balance your body needs to repair, recover, and grow.