PreSeries STIM-FREE was developed to be the most exceptional "stimulant-free" pre-workout supplement available. With key ingredients like citrulline malate, beta-alanine, betaine, and taurine all included at clinically effective dosages, PreSeries STIM-FREE is highly recommended for anyone intolerant to stimulants/caffeine and are looking to "cycle off". With 100% formula transparency PreSeries STIM-FREE is recommended for serious athletes and bodybuilders (men and women) who demand a high-intensity pre-workout experience. There's a reason why PreSeries STIM-FREE comes in a jumbo-sized jug! Each serving exceeds 23 grams per scoop (largest of the entire PreSeries) and includes 13 active ingredients designed to increase nitric oxide to the muscles, enhance focus and endurance, and gain lean muscle mass.