Updated OptygenHP improves the body's utilization of oxygen, increases VO2 Max and anaerobic threshold while reducing lactic acid Provides 1500mg BetaAlanine per serving which increases muscular endurance, boosts strength, improves exercise capacity and delays muscular fatigue Upgraded with Ashwagandha to modulate cortisol, improve power, and enhance VO2 Max Also includes a clinically effective dose of premium grade Rhodiola and Cordyceps because clinical research has shown the combination of these two endurancespecific adaptogens improves aerobic performance Newest version of HP has 500mg more BetaAlanine than previous formula Third party online sales strictly prohibited by manufacturer