BPI Sports Best BCAA recharged is a new version of our original, top-selling best BCAA formula. In addition to Leucine, Isoleucine and Valine, this unique BCAA powder contains green tea, Taurine, coconut water, electrolytes and the patented ingredient, peak O2. Peak O2 is a performance mushroom blend that includes Cordyceps, Reishi, King Trumpet, Shitake, Lion's Mane, and turkey Tail.