High-intensity training often leads to the feeling of lactic acid buildup, but this "burn" is actually due to hydrogen ions generated when lactic acid accumulates. Muscles naturally buffer the ions with carnosine (beta-alanyl-L-histidine). Klean SR Beta-Alanine can boost muscular buffering capacity to delay fatigue and support sustained, intense efforts. SR Carnosyn®, a clinically researched, sustained-release formula, is even more effective, simplifying daily dosing and providing better muscle retention with minimal side effects. Klean SR Beta-Alanine helps you train harder, stronger, and more efficiently†!