OPTIMUM NUTRITION PLATINUM PRE-WORKOUT™ intensifies energy* & focus● with 6 g L-Citrulline, 3.2 g Beta-Alanine and 200 mg caffeine from natural sources. PLATINUM PRE-WORKOUT also contains 3 g L-Leucine, plus a combination of amino acids and vitamins to help support your training on the track, field, or in the gym.