“I don't need bullshit supplements out there for those 110 lb. guys... I just need hardcore stuff that works. I'm a hardgainer. Not the strongest man in the gym, but I hold my own. I'm 5'8" at 230 lb. with 18" arms. M-Stak helped me put on more mass and train like an animal in the gym. You guys keep up the good work and I"ll train my balls off in the gym and spread the word of Animal to everyone who asks me."
- K. Ly, San Francisco, CA
From green beginner to diehard vet, we’ve all gone through it. Skidding to a halt, our progress idles on a wretched plateau. Can’t gain another pound, workouts are stale, lifts are static. This is the hardgainer’s syndrome, and from the most slender of ectomorphs to the most muscular endomorph, we’ve all been there. Desperate to ignite new growth, we’ll try almost anything.

For those of us so dedicated to this game, these frequent moments of desperation have come to an end. The new M-Stak is here, more powerful than ever, designed to obliterate plateaus and spark an explosion of raw muscle hypertrophy. Building on the legacy built by the original M-Stak formula, the new M-Stak has taken all of the most potent components of its predecessor and cranked it up to the next level.

M-Stak has long been built on a foundation of natural anabolic flavones. These substances mimic the actions of bodybuilding pharmaceuticals, but without the harsh and undesirable side effects. Born from Eastern European athletic studies, these anabolic flavones have long been highly touted as performance enhancers capable of eliciting dramatic gains in lean muscle mass. The new M-Stak formula combines the most potent of these anabolic compounds in more hearty dosages, making the long storied anabolic potential of the product all the greater.

Primary among these flavones are Beta-Ecdysterone and Methoxyisoflavone. These ingredients have the ability to shuttle nutrients toward lean mass accumulation, a process known as nutrient partitioning. Beyond this, these anabolic flavones promote enhanced protein synthesis and nitrogen retention. These are the mechanisms most crucial in the process of new muscle growth, brought about by M-Stak without any hormonal manipulation.

Rounding out the Natural Flavone/Sterone Complex are Ajuga Turkestanica and Beta Sitosterol. Ajuga Turkestanica contains the potent phytosteroid extract Turkesterone, known to be extremely powerful in advancing protein synthesis. Beta Sitosterol, while having its own inherent anabolic potential, is a cortisol combating compound with dramatic pro-immunity effects.

With M-Stak, you also get a mega potent anti-catabolic amino blend. With advanced forms of leucine and the other BCAAs spearheading the mixture, these aminos work from a cellular level to directly stimulate protein synthesis. Studies show that by adding leucine along with a protein/carb meal, you get even greater whole body net protein balance than just consuming protein and carbs alone. These aminos help to stimulate muscle recovery and protein synthesis via translation regulations, all through non-hormonal means. They do this by manipulating key muscle growth regulators such as mTOR, PKB, p70s6k, 4E-BP1, FOXO and MAFbx. These aminos essentially work as a signal for turning on the muscle building process, allowing increased muscle anabolism following a training session.

We’ve also included key “anabolic adaptogens” such as safed musli, muira puama, rhodiola rosea and kudzu extract. Together these herbs have been shown to help increase physical training capacity, improve endurance, minimize the catabolic stress response, decrease mental fatigue as well as support healthy libido and boost immune system function. These are critical factors for naturally enhancing ones performance levels in the gym.

You also get potent insulin potentiators which work to maximize insulin production. Potent compounds such as K-R-ALA and CinnulinPF™ help your body to utilize ultra anabolic insulin both effectively and efficiently. This equates to increased uptake of glycogen and increased muscle cell volume which contributes to that full, pumped feeling when you workout.

M-Stak also delivers a potent energy blend, packed with powerful, natural stimulants, methylxanthines and evodiamine, which are designed to propel you through even the most grueling of training sessions. The addition of this complex, easily identifiable by its red capsule, makes M-Stak perfect for pre-training, lighting that fire under your ass that we all need from time to time.

Finally, M-Stak’s M-Factor transport complex works to maximize nutrient utilization to ensure all of the powerful components of the formula are processed to maximum efficacy. Using ginger root extract coupled with the ultra potent absorption enhancers bergmottin and bioperine, you can be sure that the myriad growth factors in the M-Stak formula are working to their full capacity and are not going to waste.

M-Stak floods your system with an abundance of anabolic nutrients, switching your muscle building signals on and turning them to full blast. Combining potent flavones and sterones in hefty doses with the most anabolic of amino blends supported by an array pf cutting edge asaptogens in a single pretraining pack designed for optimum absorption, the new Animal M-Stak takes non-hormonal anabolics to a whole new level. Animal M-Stak, The Ultimate Hardgainer’s Stack, has come to turn "hardgainers" into "hard" gainers.

required for
• Natural bodybuilders & powerlifters
• Classic "hardgainers"
• Maximizing muscle gains naturally
• Anabolic & anticatabolics
• Optimizing non-hormonal anabolism
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daily dose
Take one pack every day for 21 consecutive days. On training days, take a pack 45 minutes prior to exercise. On non-training days, take a pack in the morning or early afternoon.
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recommended stacks
When you want to fully maximize muscle, performance, and strength, and you want to fully optimize your body's anabolic drive, stack Animal M•Stak with Animal Pump and Universal's Torrent.
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selected sources
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Bull Exp Biol Med. 2003 Dec;136(6):585-7. PMID: 15500079
•Anthony JC, Reiter AK, Anthony TG, Crozier SJ, Lang CH, MacLean DA, Kimball SR, and Jefferson LS. Orally administered leucine enhances protein synthesis in skeletal muscle of diabetic rats in the absence of increases in 4E-BP1 or S6K1 phosphorylation. Diabetes 51: 928-936, 2002.
•Anthony JC, Lang CH, Crozier SJ, Anthony TG, MacLean DA, Kimball SR, and Jefferson LS. Contribution of insulin to the translational control of protein synthesis in skeletal muscle by leucine. Am J Physiol Endocrinol Metab 282: E1092–E1101, 2002.
•Anthony JC, Reiter AK, Anthony TG, Crozier SJ, Lang CH, MacLean DA, Kimball SR, and Jefferson LS. Orally administered leucine enhances protein synthesis in skeletal muscle of diabetic rats in the absence of increases in 4E-BP1 or S6K1 phosphorylation. Diabetes 51: 928–936, 2002.
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•Bratusch-Marrain, et al. The influence of amino acids and somatostatin on prolactin and growth hormone release in man. Acta Endocrinol 90:403, 1979.
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•Chermnykh NS, et al. The action of metandrostenolone and ecdysterones on the physical endurance of animals and on protein metabolism in the skeletal muscles. Farmocol Toksikol 1988;51:57-60.
•Dinan L. 2001, Phytoecdysteroids: biological aspects. Phytochemistry 57:325-339
•DiSilverio F, et al. Evidence that serenoa repens extract displays an antiestrogenic activity in prostatic tissue of benign prostatic hypertrophy patients. Eur Urol 1992; 21:309.
•Gadzhieva RM, et al. A comparative study of the anabolic action of ecdysten, leveton and Prime Plus, preparations of plant origin. Eksp Klin Faramkol 1995;58:46-8.
•Germia E. Antioxidant actions of acetyl-l-carnitine: in vitro study. Med Sci Res 16:699-700, 1988.
•Hammarqvist F, et al. Alpha-ketoglutarate preserves protein synthesis and free glutamine in skeletal muscle after surgery. Surgery 109(1):28-36, 1991.
•Karlsson HK, Nilsson PA, Nilsson J, Chibalin AV, Zierath JR, and Blomstrand E. Branched-chain amino acids increase p70S6K phosphorylation in human skeletal muscle after resistance exercise. Am J Physiol Endocrinol Metab 287: E1–E7, 2004
•Laszlo F, et al. Metabolic 5-methyl-isoflavone-derivatives, process for the preparation thereof and compositions containing the same. US Patent 4,163,746, August 7, 1979.
•Mamatkhanov A. U. et al. Isolation of Turkesterone from the epigeal part of ajuga turkestanica and it’s anabolic activity. Chemistry of natural compounds, 1998, vol. 34, pp. 150-154
•Nair KS, Schwartz RG, and Welle S. Leucine as a regulator of whole body and skeletal muscle protein metabolism in humans. Am J Physiol Endocrinol Metab 263: E928–E934, 1992
•Norton LE, Layman DK. Leucine regulates translation initiation of protein synthesis in skeletal muscle after exercise. J Nutrition. 2006 Feb;136(2):533S-537S.
•Otaka T, Okui S, Uchiyama M 1969, Stimulation of protein synthesis in mouse liver by ecdysone. Chemical & Pharmaceutical Bulletin (Japan) 17(1):75-81.
•René Koopman, et al. Combined ingestion of protein and free leucine with carbohydrate increases postexercise muscle protein synthesis in vivo in male subjects. Am J Physiol Endocrinol Metab 288: E645-E653, 2005.
•Sershon H, et al. Effect of acetyl-l-carnitine on the dopaminergic systems in aging animals. J Neurosci 30:555-59, 1991.
•Spasov AA, et al. A double-blind, placebo-controlled pilot study of the stimulating and adaptogenic effect of Rhodiola rosea SHR-5 extract on the fatigue of students caused by stress during an examination period with a repeated low-dose regimen. Phytomedicine 2000;7(2):85-9.
•Syrov VN, et al. Anabolic activity of phytoecdysone-ecdysterone isolated from Rhaponticum carhamoides (Willd.). Farmocol Toksikol 1976;39:690-3.
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