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Animal Stak from Universal Nutrition is quite a specific product made for the hardcore bodybuilders. Looking at the 8 different stacks in the formula, it's no wonder its called "Animal Stak". So what are the 8 stacks? You can tell from reading the label, but we'll run through them quickly: prohormones, growth hormones (GH), lutenizing hormone (LH booster), thermogenics, DHT blockers, estrogen blockers, liver support, and vitamins and minerals supplementation.

Universal Animal Stak Stacks - A Closer Look

First, take a quick look at the ingredients that make up each of the 8 stacks in Animal Stak.

PROHORMONE FACTORS
4-Androstenedione: 100mg
19-Nor-5-Androstenedione: 50mg
5-Androstenediol: 50mg
DHEA: 50mg

GH/IGF FACTORS
L-Arginine Pyroglutamate: 2500mg
L-Ornithine Alpha-Ketoglutarate: 1250mg
Taurine: 750mg
Colostrum: 250mg

LH BOOSTER
Tribulus: 250mg
Acetyl-L-Carnitine: 250mg
L-Carnitine: 100mg

THERMOGENIC FACTORS
Ma Huang Extract: 167mg
Kola Extract: 500mg

DHT BLOCKERS
Saw Palmetto: 200mg
Beta Sitosterol: 200mg
Pygeum Africanum: 50mg

ESTROGEN BLOCKERS
Kudzu: 100mg
Chrysin: 250mg

LIVER SUPPORT
Lecithin: 100mg
Milk Thistle: 50mg

VITAMIN/MINERAL SUPPORT
Vitamin C: 50mg
Zinc: 15mg
Vitamin B6: 10mg
Chromium Picolinate: 100mcg

Pretty long list huh?

We'll take a look at the more important ones here.

Prohormones Stack - Animal Stak uses 150mg of Androstenedione, 50mg of Androstenediol, and 50mg of DHEA. Androstenedione isn't that great in our opinion, but with the Androstenediol and DHEA, this could be a decent stack. Find out why we don't care much for Androstenedione here, and also in this Andro research update article.

GH factors - GH stands for growth hormone. Both Arginine and Ornithine help in boosting GH. Through these 2 amino acids, you get a list of benefits from increased GH: helps protein synthesis, lowers protein degeneration, promotes amino acid uptake in muscles, among other important anabolic functions. Taurine is the second most abundant amino acid after glutamine. It's one of the building blocks of protein. It helps enhance glucose and amino acid transport into muscle cells.

LH booster - LH stands for lutenizing hormone. LH stimulates the production of testosterone, and we all know that testosterone is what really helps us build muscles, and at the same time, gives males their defining characteristics. I won't go in detail about the ingredients here. Read our article on Tribulus Terrestris here.

Thermogenics - Not much more needs to be said about thermogenics. I talk about thermogenics fat loss and the ECA stack in many articles in this website. (PS. Ma Huang is ephedrine.)

DHT blockers - DHT or Dihydrotestosterone is associated with hair loss, most often in men, but also happens to women. It causes your hair follicle to eventually shut down. Hair loss is a common side effect of prohormone users. So adding some DHT blockers to the formula is definitely a good thing.

Estrogen Blockers - You should know that DHEA is a 2 step precursor to testosterone. DHEA converts to andro compounds, and it can also convert into estrogen - which is responsible for feminine characteristics. So estrogen blockers are a good thing too.

With its combination of ingredients, Animal Stak looks like a decent product. At about $50 bucks retail for a 21 pack supply, it's a mid range priced product. If you order it online, you can save yourself almost $20 bucks.

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