Training Supplement. The non-hormonal anabolic stack. Nutrient-partitioning. Protein synthesis. Anabolism. Anti-catabolism. Flavones. Sterones. Stims. Who We Are: In 1983, Animal was founded with the birth of Animal Pak, the venerable training pack that started it all. Born from the needs and desired of pro bodybuilders, Animal has grown over the decades. Today, Animal has stood the test of time and been proven in the trenches day in and day out. The name stands for trust, integrity and a no nonsense approach to the game. What Animal M-Stak Is: Hard gainer. You're a hard worker and you give it everything you got 24/7 but the gains are hard to come by. As a classic hard gainer, you train big and you eat big, but you have little to show for it. Animal M-Stak is a non-steroidal product geared specifically for you. Through its unique set of properties, most notably nutrient-partitioning, Animal M-Stak helps you maximize your lean gains with greater efficiency and effectiveness. Work hard. Don't gain Ingredient Notes: Bioperine is Piper nigrum extract standardized for a minimum of 95% piperine alkaloids. (These statements have not been evaluated by the FDA. This product is not intended to diagnose, treat, cure, or prevent disease.) Made proudly in the USA.