USN B4-Bomb Extreme is an explosive pre workout designed to support performance levels. Ingredients include Teacrine, L-arginine Nitrate, ALA, L-theanine, Astragin, Agmapure and Pycnogenol.Teacrine supports the natural biological metabolic processes to deliver longer lasting energy, increase mental clarity, mood and motivation. L-Arginine Nitrate supports increased pump, training performance and enhances the absorption of nutrients. ALA has been included for its role in protecting muscle and increasing muscular glucose uptake for more power.L-Theanine which supports blood flow, energy and focus while Astragin supports increased strength. Agmapure may improve glycogen storage and increased water retention within the muscle as well as support Nitric Oxide levels.Finally Pycnogenol helps to support blood micro-circulation, muscular blood flow and arterial opening to enhance nutrient and oxygen flow. It also works as a lactate buffer and enhances muscle pumpFor best results USN recommend taking B4-Bomb Extreme 30-45 minutes prior to training.