Animal Pak. M-Stak. Hard Gainer's. Animal Training Packs. Training Supplement. The Non-Hormonal Anabolic Stack. Nutrient-Partitioning. Protein Synthesis. Anabolism. Anti-Catabolism. Flavones. Sterones. Stims. Who We Are. Animal was founded with the birth of Animal Pak, the venerable training pack that started it all. Born from the needs and desires 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 hard. Our Ironclad Guarantee: Animal is dedicated to being the best in the business, no two ways about it. That's why we stand behind every single can we make with our ironclad guarantee. If this product doesn't meet with your tough requirements for any reason, take the remainder along with your receipt back to where you bought it for a full and immediate refund or exchange. No questions asked. It's as simple as that. When it comes to standing behind our products, we don't mess around. Natural Flavone/Sterone Complex 750mg: B-Ecdysterone, 5-Methyl-7-Methoxyisoflavone, Ajuga Turkestanica Extract (turdesterone), B-Sitosterol. Anti-Catabolic Amino Complex 300mg: L-Leucine, L-Isoleucine, L-Valine, L-Taurine, Acetyl-L-Carnitine (ALC), Leucine Ethyl Ester HCI. Anabolic Adaptogen Complex 1000mg: Muira Puama, Kudzu (Isoflavones), Safed Musli, Rhodiola Rosea (Rosavins). Insulin Potentiating Complex 500mg: Fenugreek (4-Hydroxyisoleucine), Banaba Leaf Extract (Corosolic Acid), Cinnulin PF, K-R-Alpha Lipoic Acid (K-R-ALA). M Factor Complex: Ginger Root (Gingerols, Shogaols), Grapefruit (6,7-Dihydroxybergamottin), Bioperine. Ingredient Notes: Bioperine is Piper nigrum extract standardized for a minimum of 95% piperine alkaloids and is a registered trademark of the Sabinsa Corporation (U.S. Patents No. 5,536,506, No. 5,744,161, No. 5,972,382). CinnulinPF is a registered trademark of Integrity Nutraceuticals International.