Six Star Pro Nutrition N.O. Fury Nitric Oxide Powder is a powerful pre-workout formula that gives you optimal strength-training results. Designed for strength athletes, body builders and recreational weight trainers, this product helps build rock-hard muscle. Use N.O. Fury powder. fruit punch, to increase muscle performance and intensify energy. In a third-party study, test subjects increased their strength by 94 percent.The nitric oxide formula is easy to use and effective: just one serving of the nitric oxide formula helps you achieve more results while working out. This pre-workout powder comes in a convenient 1.2-lb size and features an arginine ingredient.