Boost Oxygen is portable 95% pure supplemental oxygen for all-natural respiratory support. No prescription is needed. It is used by athletes for recovery and performance, older adults for an active lifestyle, people at high-altitudes for altitude acclimation, and those experiencing poor air quality. Did you know the air we breathe contains only 21% oxygen – the majority is useless 78% nitrogen? Our body needs oxygen to make energy. Founded in 2007, Boost Oxygen provides easy and immediate access to supplemental oxygen.