Strom StimuMAX is a pre-workout that contains Citrulline Mallate, a combination of Citrulline and DL-malate. Citrulline is a non-essential amino acid that does not aid muscle growth but instead benefits the urea cycle, aiding the removal of toxins, particularly ammonia as well as acting as a vasodilator. It also contains N-Acetyl L-Tyrosine and Beta Alanine which are both amino acids helping with various bodily functions including muscle synthesis and improved muscular endurance in high intensity exercise to name a couple. Finally, a good dose of caffeine is provided for an immediate performance booster, helping with muscular output and mental stimulation. Warning - product contains nuts in the form of walnut extract. Product contains high levels of caffeine New and improved formula Ingredients: 6000mg Cit malate 3200mg beta alanine 1000mg nac l tyrosine 250mg caffeine 200mg juglans Regis whole fruit extract - 10-1 water extract (walnut - warning - nut allergen Please see below for studies on the active ingredients. Citrulline https://www.ncbi.nlm.nih.gov/pubmed/20386132 Beta alanine https://jissn.biomedcentral.com/articles/10.1186/s12970-018-0224-0