Customize Your Shopping Experience!

Please select the destination country, language, and currency you prefer.

Available Shipping Methods
Available Payment Methods
Added to Cart
Combo Discount:
View/Edit Cart Checkout
Cart Total:
Customers Also Bought:

Universal Nutrition, Animal Stak, Testosterone Optimizers, 21 Packs

By Universal Nutrition

Our Price:
You Save:
$24.45 (37%)
  • Volume Discount
  • Buy 4+
    Save 5%
Earn 10% Loyalty Credit ?

This product is already in your Wish List.

View Wish List

This product is now in your Wish List.

In Stock
  • Product Code: UNN-03023
  • UPC Code: 039442030238
  • Package Quantity: 21 Packs
  • Dimensions: 4 x 4 x 5.5 in, 0.55 lbs (0.25 kg)
Bundle Offer
Save $6.00 when you purchase these items today for only $44.00


Combo Discount:



- $6.00


Product Overview

  • New More Potent Formula
  • The Complete Anabolic Hormone Stack
  • Get Jacked
  • Animal Training Packs
  • Training Supplement
  • GH Boosters
  • Aromatase Inhibitors
  • Restorative Support

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 real needs and desires of professional bodybuilders, Animal has grown over prodigiously over the decades. Today, as yesterday, the name Animal stands for trust, integrity and a unique no nonsense approach to the game. Animal also represents a group of products that have stood the test of time, proven again and again in the labs, and in the trenches where it counts most... The gym and the stage. Dedicated to serious nutrition for the serious athlete, Animal is your choice when it comes to complete and comprehensive supplementation. Animal. The choice of champions. What Animal Stak Is You don't get jacked by accident. The freaks got that way because they leave nothing to chance. Hard and heavy training and massive clean eating for years on end is the bare minimum required. The best take care of the basics. But on top of all that, they take advantage of every edge they can get. This most elusive "edge" comes in the form of anabolic hormone production and utilization. Testosterone and GH—the more you've got the better. Estrogen, cortisol, DHT—the less you product, the more you can grow. Optimizing your internal anabolic environment while cranking out and efficently using these muscle-building hormones cam make all the difference. For you there is Animal Stak, the anabolic edge for those determined few who leave nothing to chance.

Suggested Use

Take a single pack daily for 21 straight days. On training days, take it 30-45 minutes before lifting. On non-training days, take it prior to bed. For best results. "cycle" this product following a schedule of three weeks on and one week off. Best results if used by those who are 25 years or older. However, due to its ability to help modulate free test levels, it could benefit others as well. Consider "stacking" Animal Stak with either Animal Test or Animal M-Stak for even greater gains.

Other Ingredients

Gelatin (capsule), dicalcium phosphate, magnesium stearate, silicon dioxide, stearic acid, titanium dioxide, FD&C blue #1, FD&C yellow #5&6. Contains soy and egg. Made in a GMP facility on equipment that processes milk, soy, egg, peanuts, tree nuts, fish, shellfish, and wheat.


Not for use by individuals under the age of 18 years. Do not use if pregnant or nursing or have a serious medical condition. Consult a physician before using this product. Use of this product may be banned by some athletic associations. Athletes should definitely consult with their sanctioning authority before use. Exercise good judgment and keep this out of reach of children. To keep it as fresh as possible, store this product in a cool, dry place, away from heat, moisture and sunlight. You know the drill.

Visit Manufacturer's Website
Supplement Facts
Serving Size: 1 Pack
Servings per Container: 21
  Amount Per Serving %DV
Vitamin B6 (pyridoxine HCI) 10.5 mg 525%
Magnesium (as oxide) 450 mg 113%
Zinc (as oxide) 30 mg 200%
Pro Testosterone Complex
Tribulus Terretris Extract (standardized for protodioscin & steroidal saponins)
1500 mg **
Longjack Extract Complex
Eurycoma Longjifolia (root) LJ-100 (EuryPeptides, glycosaponins & polysaccharides)
Fenugreek (seed) (steroidal saponins)   **
Stinging Nettle Root   **
Maca Extract (Lepidium meyenii)   **
Growth Hormone Support
Arginine Complex (Arginine HCI, ArginoCarn [acetyl-L-carnitine arginate dichloride])
1500 mg **
Mucuna Pruriens (seed) (standardized for L-dope)   **
SuperSerum   **
Sustamine   **
Alpha Glycerylphosphorylcholine (alpha GPC)   **
Anti-Aromatase Complex
Polygonum Cuspidatum Root (resveratrol)
300 mg **
Calcium-D-Glucarate   **
Diindolylmethane (DIM)   **
Hormone Amplifying Blend
L-Carnitine Fumarate
500 mg **
AgmaPure (agmatine sulfate)   **
GlycoCarn (glycine propionyl L-carnitine HCI)   **
Quercetin   **
AstaPure (astaxanthin)   **
Bioperine (fruit)   **
Restorative Support Complex
Milk Thistle Extract (silymarin)
500 mg **
Astragalus (root)   **
Ashwagandha Extract   **
Na-R-Alpha Lipoic Acid (Na-R-ALA)   **
Coenzyme Q10   **
**Daily Value (DV) not established.

iHerb Customer Reviews

5 Stars
4 Stars
3 Stars
2 Stars
1 Stars

Powerful Stuff

Posted by HawaiianViking on Sep 05, 2012

Universal Nutrition, Animal Stak, Testosterone Optimizers are powerful: I've noticed a significant improvement in my workouts while I've been taking this product. It's a good alternative to dangerous and/or illegal substances, but it's not without its drawbacks: This product is expensive. For 21 Packs, it's not the best value, and you'll probably need more than just 21 Packs to reach and maintain your training goals. For me personally, this product has given me a headache, upset my stomach and has been taxing to my liver, so it's not the easiest regimen to maintain. Still, it's probably worth it, since it is that effective.

Was this review helpful to you?

6 people found the following review helpful

Good for balancing/boosting test levels

Posted by Reviewer2624150 on Jul 18, 2011

Found that this is a bit expensive for what you get, 21 days of normalized/boosted testosterone, but it definitely helps. Probably need to go through 2-3 Staks to get to where you want to be. This is a sloooow process towards getting the chiseled bod you want, but arguably a lot safer than the alternatives. I'd say if you are going for hardcore muscle gaining, this is relatively mild. Combined with lots of protein and creatine, maybe some NO2 or something like Jack3d, you should expect to see good results over a few months.

Was this review helpful to you?

4 people found the following review helpful

Still love this product

Posted by Reviewer1516752 on May 24, 2011

Been using this for 3 cycles now definately get more gains than any test boosters

Was this review helpful to you?

2 people found the following review helpful


Posted by Reviewer1923556 on Apr 13, 2011

good market good suplements thand u iherb

Was this review helpful to you?

1 person found the following review helpful

So good!

Posted by 4659205959398238099 on Nov 19, 2012

So good!

Was this review helpful to you?

1 person found the following review helpful

See All Reviews