1st Endurance OptygenHP Pills 120ct - NEW Formula: Introducing the new and improved Optygen HP formula, now available in its most potent form yet. The all-new Optygen HP formula features our exclusive OptyMax Proprietary Matrix as well as 50% more Beta-Alanine than the previous formula. First Endurance has been testing the new formula since early 2013. It was tested at the Tour of California, Giro d Italia, as well as a number of triathlons. Feedback has been exceptional.