PeakO2®  is a unique blend of six adaptogenic mushroom extracts marketed as a natural premier ingredient in many of the industry’s top sports supplements. It was developed to enhance athletic performance and endurance because it delivers the desired results; PeakO2® has gained popularity among athletes and fitness enthusiasts. By improving oxygen utilization and increasing ATP production while reducing lactate levels, PeakO2® is said to help users achieve their workout goals more efficiently and with less fatigue. It often appears in many pre-workout formulas.