MUSCLE GROWTH WITHOUT THE HORMONES - Animal M-Stak was designed for the all-natural athlete trying to take their game to the next level. Whether it's the weights, the field, or the gym, Animal M-Stak uses the power of all natural and non-hormonal ingredients to get the job done. PROMOTES PROTEIN SYNTHESIS FOR MAXIMUM GAINS - Animal M-Stak uses a Natural Flavone/Sterone Complex to help your body jump start the protein synthesis process. Protein synthesis means more muscle and strength. That's the name of the game for the all-natural athlete. IMPROVE ENDURANCE AND MINIMIZE CATABOLIC STRESS RESPONSES - Animal M-Stak features an anabolic complex with: Eleutherococcus Senticosus, Muira Puama, and isoflavones from Kudzu. These potent ingredients together have been shown to improve training capacity, and decrease muscle fatigue. NUTRIENT PARTITIONING FORMULA - Animal M-Stak uses 5-Methyl-7-Methoxyisoflavone to shuttle nutrients specifically towards lean mass accumulation. Animal M-Stak also helps promote nitrogen retention, which is key to muscle growth. IRONCLAD GUARANTEE: Animal is dedicated to being the best in the business, no two ways about it. If this product doesn't meet with your tough requirements for any reason, let us know. When it comes to standing behind our products, we don't mess around. That's the truth.