Hands down the best amino drink period! Why settle for an amino drink with a few BCAAs and a bunch of taurine while you workout. We have spent years researching what amino acids provide the most benefit to athletes and have come up with a formulation that tastes good and more importantly works very well. Our Amino Boost contains BCAAs for endurance and muscle building, L-Citrulline for enhancing blood flow, Acetyl Carnitine (ALCAR) for improved energy and mental focus, Tyrosine to help stimulate endorphins in your brain and improve your sense of "well being." We have also included taurine but at an appropriate level for heart health, elimination of muscle cramps and mental alertness. We have enhanced all of this with a good dose of caffeine but not an overwhelming amount because we know most people will love this product so much, they will drink a half gallon of it each and every day.